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: habib thiam (21 january 1933 – 26 june 2017) was a senegalese politician.
Example Output: habib thiam

Example Input: vichy is a "commune" in central france, in the auvergne-rhône-alpes region, along the allier river.
Example Output: vichy

Example Input: ordinary language philosophy is a way of doing philosophy that uses ordinary, everyday words.
Example Output:
ordinary language philosophy