input: In May 1971, the Temptations finally found a permanent replacement for the first tenor position in twenty-year-old Baltimore native Damon Harris. Otis Williams, Edwards, Franklin, Street, and Harris continued recording and performing, and Norman Whitfield continued producing hits for them. There were Top 40 hits such as "Superstar (Remember How You Got Where You Are)" (1971), a message from the Temptations to David Ruffin and Eddie Kendricks, and "Take a Look Around" (1972). During this period, the group toured with Quiet Elegance as their back-up singers. Quiet Elegance featured Lois Reeves, the sister of Martha Reeves, alongside Frankie Gearing and Millie Vaney-Scott.  Late 1972 saw the release of "Papa Was a Rollin' Stone", a magnum opus written by Norman Whitfield and Barrett Strong and produced by Whitfield. Originally a three-minute record written and produced for the Undisputed Truth, Whitfield took the somber tune and created a sprawling, dramatic twelve-minute version for the Temptations--a forerunner of the extended single, soon to become popular in clubs and discotheques. An edited seven-minute version was released as a single and became one of the longest hit singles in music history: it hit number 1 on the pop charts and number 5 on the R&B charts. In 1973, "Papa Was a Rollin' Stone" won the Temptations their second Grammy for Best R&B Performance by a Group. Whitfield and arranger/conductor Paul Riser won the award for Best R&B Instrumental Performance for the instrumental version on the B-side, and Whitfield and Barrett Strong won the songwriting Grammy for Best R&B Song.  After "Papa Was a Rollin' Stone", Whitfield stopped working with Barrett Strong, and began writing the Temptations' material on his own. The success of "Papa" led Whitfield to create more elongated, operatic pieces, including the Top 10 hit "Masterpiece" (1973) and several of the tracks on the resulting Masterpiece album. Tensions developed between Whitfield and the group, who found Whitfield arrogant and difficult to work with, and the group citing his habitual tardiness, his emphasis of the instrumental tracks at the expense of their vocals on many of his productions, and the declining singles and albums sales as other sources of conflict, sought to change producers. Otis Williams complained about Whitfield's actions and the Temptations' stagnant sales to Berry Gordy; as a result, the group was reassigned to Jeffrey Bowen, co-producer of the 1967 In a Mellow Mood album.  The final Norman Whitfield-produced Temptations album, 1990, was released in December 1973, and included the Top 30 single "Let Your Hair Down". Shortly afterwards, Whitfield left Motown, and in 1975 established Whitfield Records, taking the Undisputed Truth and Willie Hutch with him, along with Rose Royce---who performed an instrumental track for "Let Your Hair Down" before recording their 1976 smash "Car Wash."

Answer this question "What happened in the early 70s?"
output: In May 1971, the Temptations finally found a permanent replacement for the first tenor position in twenty-year-old Baltimore native Damon Harris.

input: Sitting Bull's band of Hunkpapa continued to attack migrating parties and forts in the late 1860s. When in 1871 the Northern Pacific Railway conducted a survey for a route across the northern plains directly through Hunkpapa lands, it encountered stiff Lakota resistance. The same railway people returned the following year accompanied by federal troops. Sitting Bull and the Hunkpapa attacked the survey party, which was forced to turn back. In 1873, the military accompaniment for the surveyors was increased again, but Sitting Bull's forces resisted the survey "most vigorously." The Panic of 1873 forced the Northern Pacific Railway's backers (such as Jay Cooke) into bankruptcy. This halted construction of the railroad through Lakota, Dakota, and Nakota territory.  After the 1848 finding of gold in the Sierra Nevada and dramatic gains in new wealth from it, other men became interested in the potential for gold mining in the Black Hills. In 1874, Lt. Col. George Armstrong Custer led a military expedition from Fort Abraham Lincoln near Bismarck, to explore the Black Hills for gold and to determine a suitable location for a military fort in the Hills. Custer's announcement of gold in the Black Hills triggered the Black Hills Gold Rush. Tensions increased between the Lakota and whites seeking to move into the Black Hills.  Although Sitting Bull did not attack Custer's expedition in 1874, the US government was increasingly pressured by citizens to open the Black Hills to mining and settlement. Failing in an attempt to negotiate a purchase or lease of the Hills, the government in Washington had to find a way around the promise to protect the Sioux in their land, as specified in the 1868 Treaty of Fort Laramie. It was alarmed at reports of Sioux depredations (encouraged by Sitting Bull). In November 1875, President Grant ordered all Sioux bands outside the Great Sioux Reservation to move onto the reservation, knowing full well that not all would comply. As of February 1, 1876, the Interior Department certified as "hostile" those bands who continued to live off the reservation. This certification allowed the military to pursue Sitting Bull and other Lakota bands as "hostiles".  Based on tribal oral histories, historian Margot Liberty theorizes many Lakota bands allied with the Cheyenne during the Plains Wars because they thought the other nation was under attack by the US. Given this connection, she suggests the major war should have been called "The Great Cheyenne War". Since 1860, the Northern Cheyenne had led several battles among the Plains Indians. Before 1876, the U.S. Army had destroyed seven Cheyenne camps, more than those of any other nation.  Other historians, such as Robert M. Utley and Jerome Greene, also use Lakota oral testimony, but they have concluded that the Lakota coalition, of which Sitting Bull was the ostensible head, was the primary target of the federal government's pacification campaign.

Answer this question "When did the war end?"
output:
1876,