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: kappa (uppercase/lowercase Κ κ), is the letter of the greek alphabet, used to represent the "k" sound in ancient and modern greek.

Answer: kappa


Question: waiting for guffman is a musical mockumentary movie made in 1997.

Answer: waiting for guffman


Question: mohamed ennaceur (; born 21 march 1934) is a tunisian politician.

Answer:
mohamed ennaceur