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.

Q: boyz ii men is an american boy band from philadelphia, pennsylvania.

A: boyz ii men
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Q: panampatta is a village situated near pathanapuram in kollam district, kerala state, india.

A: panampatta
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Q: in geometry, the diameter of a circle is a line from one side directly to the opposite side through the centre.

A:
diameter
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