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: lori wilson (february 15, 1937 – january 30, 2019) was an american lawyer and politician.
Example Output: lori wilson

Example Input: venice is a city in italy.
Example Output: venice

Example Input: strict weak ordering is a binary relation on a set.
Example Output:
strict weak ordering