In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.

Q: Passage: A tunnel diode or Esaki diode is a type of semiconductor diode that has negative resistance due to the quantum mechanical effect called tunneling. It was invented in August 1957 by Leo Esaki, Yuriko Kurose, and Takashi Suzuki when they were working at Tokyo Tsushin Kogyo, now known as Sony. In 1973, Esaki received the Nobel Prize in Physics, jointly with Brian Josephson, for discovering the electron tunneling effect used in these diodes. Robert Noyce independently devised the idea of a tunnel diode while working for William Shockley, but was discouraged from pursuing it. Tunnel diodes were first manufactured by Sony in 1957, followed by General Electric and other companies from about 1960, and are still made in low volume today.
Link Information: In 1958, the company changed its name to "Sony". Answer: 1958

A: When did Tokyo Tsushin Kogyo change its name?
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Q: Passage: Harold Henry Joachim was born in London, the son of a wool merchant who had come to England as a boy from Hungary. He was educated at Harrow School and Balliol College, Oxford, where he was a pupil of R. L. Nettleship. He was elected to a Prize Fellowship at Merton College in 1890, and in 1892 became a philosophy lecturer at the University of St Andrews. Returning to Oxford in 1894, he was lecturer at Balliol until becoming a Fellow and Tutor at Merton in 1897. In 1907 he married his first cousin, a daughter of the violinist Joseph Joachim. He became Wykeham Professor of Logic of the University of Oxford from 1919, succeeding the realist John Cook Wilson, and occupied the chair until his death. Whilst at Oxford he taught the American poet T.S. Eliot. Joachim was a nephew of the great 19th Century violinist Joseph Joachim, and was himself a talented amateur violinist.
Link Information: The youngest brother of Henry Nettleship, he was educated at Uppingham and Balliol College, Oxford, where he held a scholarship. Answer: Uppingham and Balliol College, Oxford

A: Where was Harold H. Joachim's teacher at Balliol College educated?
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Q: Passage: The Golden State Warriors last made the NBA Finals in , when they were still in San Francisco. In the years since, they moved to Oakland, briefly lost Rick Barry to the American Basketball Association, and named Warriors great Al Attles as head coach. Before the start of the 197475 season they traded future Hall of Famer Nate Thurmond to the Chicago Bulls for young center Clifford Ray. They also drafted Jamaal Wilkes, then known as Keith Wilkes, out of UCLA. With Barry as the offensive leader, and with Attles using a team approach to coaching, the Warriors managed to finish the season atop the Western Conference with 48 wins. In the playoffs, they defeated the Seattle SuperSonics in six games, then eliminated Thurmond and the Bulls in seven games to advance to the Finals.
Link Information: Thurmond was drafted by the San Francisco Warriors Answer: 3

A:
How many NBA teams did the man play for who the Warriors traded to the Bulls?
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