Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.
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Question: From what London building in 1936 were the first BBC TV broadcasts made?

Answer: alexandra palace


Question: Which of Jupiter's Moons is largest?

Answer: ganymede


Question: Which H is an organ-like keyboard instrument in which the notes are produced by air driven through metal reeds by foot-operated bellows?

Answer:
harmonium