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.

Input: Consider Input: odd future is a group of hip hop musicians from los angeles, united states.

Output: odd future


Input: Consider Input: the waldorf astoria chicago, formerly the elysian hotel chicago, is a luxury hotel located at 11 east walton street in the gold coast area of chicago, illinois.

Output: waldorf astoria chicago


Input: Consider Input: mower hospital was a military hospital in a neighborhood named chestnut hill, which is in the city of philadelphia, pennsylvania.


Output: mower hospital