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: boyz ii men is an american boy band from philadelphia, pennsylvania.
Example Output: boyz ii men

Example Input: hexameter is a metrical line of verse.
Example Output: hexameter

Example Input: juva is a municipality in southern savonia.
Example Output:
juva