Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.
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Question: rupert thorne is a fictional batman character, who is the crime boss of batman.

Answer: rupert thorne


Question: the world conference of life and work was an ecumenic conference.

Answer: world conference of life and work


Question: the finnish markka, also known as the suomen markka, or simply markka, was the currency in finland before finland started to use euro.

Answer:
finnish markka