Answer the question at the end by quoting:

Khalid Sheikh Mohammed (sometimes also spelled Khalid Shaikh Mohammed; among at least fifty pseudonyms; born March 1, 1964) is an Islamist militant held by the United States at the Guantanamo Bay detention camp under terrorism-related charges. He was named as "the principal architect of the 9/11 attacks" in the 9/11 Commission Report. Sheikh Mohammed was a member of Osama bin Laden's al-Qaeda organization, leading al-Qaeda's propaganda operations from around 1999 until late 2001. He confessed to FBI and CIA agents to a role in many of the most significant terrorist plots over the last twenty years, but his interrogators' use of enhanced interrogation techniques has caused some to question certain aspects of his confessions.
By the time the Bojinka plot was discovered, Mohammed had returned to Qatar and his job as a project engineer at the country's Ministry of Electricity and Water. He traveled in 1995 to Sudan, Yemen, Malaysia, and Brazil to visit elements of the worldwide jihadist community, although no evidence connects him to specific terrorist actions in any of those locations. On his trip to Sudan, he attempted to meet with Osama Bin Laden, who was at the time living there, aided by Sudanese political leader Hassan al-Turabi. After the US asked the Qatari government to arrest Mohammed in January 1996, he fled to Afghanistan, where he renewed his alliance with Abdul Rasul Sayyaf. Later that year, he formed a working relationship with Bin Laden, who had settled there.  Bin Laden and his colleagues relocated their operations to Afghanistan at this time. Abu Hafs al-Masri/Mohammed Atef, bin Laden's chief of operations, arranged a meeting between bin Laden and Mohammed in Tora Bora sometime in mid-1996, in which Mohammed outlined a plan that would eventually become the quadruple hijackings of 2001. Bin Laden urged Mohammed to become a full-fledged member of Al Qaeda, but he continued to refuse such a commitment until around early 1999, after the 1998 U.S. embassy bombings in Nairobi and Dar es Salaam.  Mohammed moved his family from Iran to Karachi, Pakistan, in 1997. That year, he tried unsuccessfully to join mujahideen leader Ibn al-Khattab in Chechnya, another area of special interest to Mohammed. Unable to travel to Chechnya, he returned to Afghanistan. He ultimately accepted bin Laden's invitation to move to Kandahar and join al-Qaeda as a full-fledged member. Eventually, he became leader of Al Qaeda's media committee.

Did Khalid work with anyone else in his planning?

Abu Hafs al-Masri/Mohammed Atef,

IN: Hugo is a 2011 epic historical adventure drama film directed and co-produced by Martin Scorsese and adapted for the screen by John Logan. Based on Brian Selznick's book The Invention of Hugo Cabret, it is about a boy who lives alone in the Gare Montparnasse railway station in Paris in the 1930s. A co-production between Graham King's GK Films and Johnny Depp's Infinitum Nihil, the film stars Ben Kingsley, Sacha Baron Cohen, Asa Butterfield, Chloe Grace Moretz, Ray Winstone, Emily Mortimer, Jude Law, Helen McCrory, and Christopher Lee. Hugo is Scorsese's first film shot in 3D, of which the filmmaker remarked, "I found 3D to be really interesting, because the actors were more upfront emotionally.

The backstory and primary features of Georges Melies' life as depicted in the film are largely accurate: He became interested in film after seeing a demonstration of the Lumiere brothers' camera; he was a magician and toymaker; he experimented with automata; he owned a theatre (Theatre Robert-Houdin); he was forced into bankruptcy; his film stock was reportedly melted down for its celluloid; he became a toy salesman at the Montparnasse station, and he was eventually awarded the Legion d'honneur medal after a period of terrible neglect. Many of the early silent films shown in the movie are Melies's actual works, such as Le voyage dans la lune (1902). However, the film does not mention Melies' two children, his brother Gaston (who worked with Melies during his film-making career), or his first wife Eugenie, who was married to Melies during the time he made films (and who died in 1913). The film shows Melies married to Jeanne d'Alcy during their filmmaking period, when in reality they did not marry until 1925. The movie actually downplayed the number of movies Melies created, stating he had made "over 500 films." When, in actuality it was over 1500.  The automaton's design was inspired by the Maillardet's automaton made by the Swiss watchmaker Henri Maillardet, which Selznick had seen in the Franklin Institute, Philadelphia, as well as the Jaquet-Droz automaton "the writer". A portion of the scene with Harold Lloyd in Safety Last! (1923), hanging from the clock, is shown when the main characters sneak into a movie theater. Later, Hugo, like Lloyd in Safety Last!, hangs from the hands of a large clock on a clock tower to escape from a pursuer.  Several viewings of the film L'Arrivee d'un train en gare de La Ciotat are portrayed, depicting the shocked reaction of the audience--although this view is in doubt.  Emil Lager, Ben Addis, and Robert Gill make cameo appearances as the father of Gypsy jazz guitar, Django Reinhardt, the Spanish surrealist painter, Salvador Dali, and the Irish writer James Joyce, respectively. The names of all three characters appear towards the end of the film's cast credit list.  The book that Monsieur Labisse gives Hugo as a gift, Robin Hood le proscrit (Robin Hood the outlaw), was written by Alexandre Dumas in 1864 as a French translation of an 1838 work by Pierce Egan the Younger in England. The book is symbolic, as Hugo must avoid the "righteous" law enforcement (Inspector Gustave) to live in the station and later to restore the automaton both to a functioning status and to its rightful owner. The particular copy given to Hugo looks like the 1917 English-language edition (David McKay publisher, Philadelphia, United States) with cover and interior illustrations by N.C. Wyeth, but with "Le Proscrit" added to the cover by the prop department. There is also a depiction of the Montparnasse derailment, when at 4 pm on 22 October 1895, the Granville-Paris Express overran the buffer stop at its Gare Montparnasse terminus.

What era is the film based on?

OUT:
He became interested in film after seeing a demonstration of the Lumiere brothers' camera;