In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

[Q]: Who has studied the Mahayana?, Context: There is no evidence that Mahayana ever referred to a separate formal school or sect of Buddhism, but rather that it existed as a certain set of ideals, and later doctrines, for bodhisattvas. Initially it was known as Bodhisattvayana (the "Vehicle of the Bodhisattvas"). Paul Williams has also noted that the Mahayana never had nor ever attempted to have a separate Vinaya or ordination lineage from the early schools of Buddhism, and therefore each bhiksu or bhiksuni adhering to the Mahayana formally belonged to an early school. This continues today with the Dharmaguptaka ordination lineage in East Asia, and the Mulasarvastivada ordination lineage in Tibetan Buddhism. Therefore Mahayana was never a separate rival sect of the early schools. From Chinese monks visiting India, we now know that both Mahayana and non-Mahayana monks in India often lived in the same monasteries side by side.
[A]: Paul Williams

[Q]: Who helped prepare?, Context: The Apollo astronauts were chosen from the Project Mercury and Gemini veterans, plus from two later astronaut groups. All missions were commanded by Gemini or Mercury veterans. Crews on all development flights (except the Earth orbit CSM development flights) through the first two landings on Apollo 11 and Apollo 12, included at least two (sometimes three) Gemini veterans. Dr. Harrison Schmitt, a geologist, was the first NASA scientist astronaut to fly in space, and landed on the Moon on the last mission, Apollo 17. Schmitt participated in the lunar geology training of all of the Apollo landing crews.
[A]: Schmitt

[Q]: When was the FBI Laboratory established?, Context: The FBI Laboratory, established with the formation of the BOI, did not appear in the J. Edgar Hoover Building until its completion in 1974. The lab serves as the primary lab for most DNA, biological, and physical work. Public tours of FBI headquarters ran through the FBI laboratory workspace before the move to the J. Edgar Hoover Building. The services the lab conducts include Chemistry, Combined DNA Index System (CODIS), Computer Analysis and Response, DNA Analysis, Evidence Response, Explosives, Firearms and Tool marks, Forensic Audio, Forensic Video, Image Analysis, Forensic Science Research, Forensic Science Training, Hazardous Materials Response, Investigative and Prospective Graphics, Latent Prints, Materials Analysis, Questioned Documents, Racketeering Records, Special Photographic Analysis, Structural Design, and Trace Evidence. The services of the FBI Laboratory are used by many state, local, and international agencies free of charge. The lab also maintains a second lab at the FBI Academy.
[A]:
established with the formation of the BOI