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: The follow-up, Waterpistol, was recorded in 1991 at London's Star Street Studio and Chapel Studios, Lincolnshire. Shortly after the recording of Waterpistol was complete, the Star Street studio burnt down and most of the tapes were destroyed. The only remaining DAT of the album was in the possession of producer Chris Allison. At the time, Allison was in Los Angeles, and when he returned, it transpired that he had left the copy in his hire car. It was only found weeks later after a frenzied search. However, by this point, Ghetto had folded so the record was without a distributor. Shack split, with Wilkinson joining fellow Liverpudlian John Power (formerly of The La's) to form the successful Britpop band Cast. The Head brothers accompanied Love for a few touring dates in 1992.
 Link Information: none Answer: none
[A]: How many albums did John Power have writing credit on the year Waterpistol was recorded?


[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?


[Q]: Passage: Perlmutter spent his childhood in the Mount Airy neighborhood of Philadelphia. He went to school in nearby Germantown; first Greene Street Friends School for the elementary grades, followed by Germantown Friends School for grades 7 through 12. He graduated with an AB in physics from Harvard magna cum laude in 1981 and received his PhD in physics from the University of California, Berkeley, in 1986. Perlmutter's PhD thesis titled "An Astrometric Search for a Stellar Companion to the Sun" described the development and use of an automated telescope to search for Nemesis candidates under Richard A. Muller. At the same time, he was using this telescope to search for Nemesis and supernovae, which would lead him to his award-winning work in cosmology. Perlmutter attributes the idea for an automated supernova search to Luis Alvarez, a 1968 Nobel laureate, who shared his idea with Perlmutter's research adviser.
 Link Information: Harvard University is a private Ivy League research university in Cambridge, Massachusetts, with about 6,700 undergraduate students and about 13,100 postgraduate students Answer:  University of California, Berkeley
[A]:
Which university that Perlmutter graduated from has more students?