Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Which composer was married to Clara Wieck from 1840 until his death in 1856?
clara schumann

The Trinity test site, outside of Alamogordo, NM, saw the first test of the atomic bomb on July 16, 1945. Headed by J. Robert Oppenheimer, what was the name of the project that developed the bomb?
j. robert oppenheimer

Which current Broadway musical has a Japanese therapist character called Christmas Eve?

christmas eve