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.

[EX Q]: Who composed the opera 'Lohengrin'?
[EX A]: richard wagner

[EX Q]: Which actress won an Oscar playing the lead role in the 1969 film `The Prime Of Miss Jean Brodie`?
[EX A]: maggie smith

[EX Q]: Which London performing arts centre, the largest in Europe, opened on 3rd March 1982?
[EX A]:
barbican centre