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: enac alumni (also referred to as ingenac) is an alumni association based in toulouse, midi-pyrénées.
Example Output: enac alumni

Example Input: the wrigley building (400-410 north michigan avenue, near north side, chicago, illinois) is a skyscraper in chicago.
Example Output: wrigley building

Example Input: yazd province (, "ostān-e yazd" ) is one of the 31 provinces of iran.
Example Output:
yazd province