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: ash ketchum (satoshi in japanese) is a character from the "pokémon" anime.
Example Output: ash ketchum

Example Input: salhad is one of the 51 union councils (sub-divisions) of abbottabad district in the khyber pakhtunkhwa province of pakistan.
Example Output: salhad

Example Input: denis sonet (1926 – 23 september 2015) was a french catholic priest, chaplain, marriage counselor, and educator.
Example Output:
denis sonet