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: the temple of athena nike is a temple on the acropolis of athens.
Example Output: temple of athena nike

Example Input: the southern connecticut state university is one of four universities in the u.s. state of connecticut.
Example Output: southern connecticut state university

Example Input: saxmundham railway station is a small station in suffolk, england for saxmundham.
Example Output:
saxmundham railway station