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

Input: Consider Input: The Bob Dylan songs 'Desolation Row', 'Tombstone Blues' and 'Like A Rolling Stone' featured on which album?

Output: tombstone blues


Input: Consider Input: The Church of the Savior on Spilled Blood, built on the site of the assassination of Tsar Alexander II, is in which Russian city?

Output: church of the savior on blood


Input: Consider Input: Which electronics company released the world's first all-electric compact calculator in 1957?


Output: electronics industry