Question: Robert Anson Heinlein (; July 7, 1907 - May 8, 1988) was an American science fiction writer. Often called the "dean of science fiction writers", his sometimes controversial works continue to have an influential effect on the genre, and on modern culture more generally. Heinlein became one of the first American science fiction writers to break into mainstream magazines such as The Saturday Evening Post in the late 1940s. He was one of the best-selling science fiction novelists for many decades, and he, Isaac Asimov, and Arthur C. Clarke are often considered the "Big Three" of English-language science fiction authors.

Heinlein's experience in the U.S. Navy exerted a strong influence on his character and writing. He graduated from the U.S. Naval Academy in Annapolis, Maryland with the class of 1929 and went on to serve as an officer in the Navy. He was assigned to the new aircraft carrier USS Lexington in 1931, where he worked in radio communications, then in its earlier phases, with the carrier's aircraft. The captain of this carrier was Ernest J. King, who later served as the Chief of Naval Operations and Commander-in-Chief, U.S. Fleet during World War II. Heinlein was frequently interviewed during his later years by military historians who asked him about Captain King and his service as the commander of the U.S. Navy's first modern aircraft carrier.  Heinlein also served aboard the destroyer USS Roper in 1933 and 1934, reaching the rank of lieutenant. His brother, Lawrence Heinlein, served in the U.S. Army, the U.S. Air Force, and the Missouri National Guard, and he rose to the rank of major general in the National Guard.  In 1929, Heinlein married Elinor Curry of Kansas City in Los Angeles, and their marriage lasted about a year. His second marriage in 1932 to Leslyn MacDonald (1904-1981) lasted for 15 years. MacDonald was, according to the testimony of Heinlein's Navy buddy, Rear Admiral Cal Laning, "astonishingly intelligent, widely read, and extremely liberal, though a registered Republican," while Isaac Asimov later recalled that Heinlein was, at the time, "a flaming liberal". (See section: Politics of Robert Heinlein.)

Using a quote from the above article, answer the following question: When did he go to the navy
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Answer: He was assigned to the new aircraft carrier USS Lexington in 1931,

Problem: Louis Thomas Hardin (May 26, 1916 - September 8, 1999), also known as Moondog, was an American musician, composer, theoretician, poet and inventor of several musical instruments. He was blind from the age of 16. Hardin lived in New York from the late 1940s until 1972, and during this time he could often be found on 6th Avenue, between 52nd and 55th Streets, wearing a cloak and a horned helmet sometimes busking or selling music, but often just standing silently on the sidewalk. He was widely recognized as "the Viking of 6th Avenue" by thousands of passersby and residents who weren't aware of his musical career.

Born to an Episcopalian family in Marysville, Kansas, Hardin started playing a set of drums that he made from a cardboard box at the age of five. His family relocated to Wyoming and his father opened a trading post at Fort Bridger. He attended school in a couple of small towns. At one point, his father took him to an Arapaho Sun Dance where he sat on the lap of Chief Yellow Calf and played a tom-tom made from buffalo skin.  Hardin played drums for the high school band in Hurley, Missouri before losing his sight at the age of 16 in a farm accident on July 4, 1932, involving a dynamite cap. After learning the principles of music in several schools for blind young men across middle America, he taught himself the skills of ear training and composition. He studied with Burnet Tuthill and at the Iowa School for the Blind.  He then moved to Batesville, Arkansas where he lived until 1942, when he got a scholarship to study in Memphis, Tennessee. Although the majority of his musical training was self-taught by ear, he learned some music theory from books in braille there.  In 1943 Hardin moved to New York, where he met noted classical music luminaries such as Leonard Bernstein and Arturo Toscanini, as well as legendary jazz performer-composers such as Charlie Parker and Benny Goodman, whose upbeat tempos and often humorous compositions would influence Hardin's later work. One of his early street posts was near the famed 52nd Street nightclub strip, and he was well-known to many jazz musicians and fans. By 1947 Hardin had adopted the name "Moondog" in honor of a dog "who used to howl at the moon more than any dog I knew of".

When did he start playing music ?

Answer with quotes: Hardin started playing a set of drums that he made from a cardboard box at the age of five.

Problem: Donatien Alphonse Francois, Marquis de Sade (2 June 1740 - 2 December 1814) (French: [maRki d@ sad]), was a French nobleman, revolutionary politician, philosopher, and writer, famous for his libertine sexuality. His works include novels, short stories, plays, dialogues, and political tracts; in his lifetime some were published under his own name, while others appeared anonymously, of which Sade denied being the author. Sade is best known for his erotic works, which combined philosophical discourse with pornography, depicting sexual fantasies with an emphasis on violence, criminality, and blasphemy against Christianity.

Donatien Alphonse Francois de Sade was born on 2 June 1740, in the Hotel de Conde, Paris, to Jean Baptiste Francois Joseph, Count de Sade and Marie Eleonore de Maille de Carman, cousin and Lady-in-waiting to the Princess of Conde. He was his parents' only surviving child. He was educated by an uncle, the Abbe de Sade. In Sade's youth, his father abandoned the family; his mother joined a convent. He was raised with servants who indulged "his every whim," which led to his becoming "known as a rebellious and spoiled child with an ever-growing temper."  Later in his childhood, Sade was sent to the Lycee Louis-le-Grand in Paris, a Jesuit college, for four years. While at the school, he was tutored by Abbe Jacques-Francois Amblet, a priest. Later in life, at one of Sade's trials the Abbe testified, saying that Sade had a "passionate temperament which made him eager in the pursuit of pleasure" but had a "good heart." At the Lycee Louis-le-Grand, he was subjected to "severe corporal punishment," including "flagellation," and he "spent the rest of his adult life obsessed with the violent act." At age 14, Sade began attending an elite military academy.  After 20 months of training, on 14 December 1755, at age 15, Sade was commissioned as a sub-lieutenant, becoming a soldier. After 13 months as a sub-lieutenant, he was commissioned to the rank of cornet in the Brigade de S. Andre of the Comte de Provence's Carbine Regiment. He eventually became Colonel of a Dragoon regiment and fought in the Seven Years' War. In 1763, on returning from war, he courted a rich magistrate's daughter, but her father rejected his suitorship and instead arranged a marriage with his elder daughter, Renee-Pelagie de Montreuil; that marriage produced two sons and a daughter. In 1766, he had a private theatre built in his castle, the Chateau de Lacoste, in Provence. In January 1767, his father died.

Did he have siblings?

Answer with quotes:
He was his parents' only surviving child.