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.

Example Input: a member of parliament (mp) is a person in the united kingdom or in canada who represents the people of an area (called a "constituency") in the house of commons.
Example Output: member of parliament

Example Input: the australian classification board is a government agency in australia that controls censorship and classifications.
Example Output: australian classification board

Example Input: tactopods are members of a proposed clade of ecdysozoans called tactopoda.
Example Output:
tactopoda