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: lyme regis is a coastal town in west dorset, england, 25 miles west of dorchester and 25 mi east of exeter.

Output: lyme regis


Input: Consider Input: language death is when a language stops being used as a first language (also called mother language or native language) and as a second language, which it then becomes an extinct language.

Output: language death


Input: Consider Input: albertosaurus was a relative of "tyrannosaurus".


Output: albertosaurus