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: the nissan maxima is an automobile produced by nissan motor company in seven generations since 1981.

Output: nissan maxima


Input: Consider Input: erzurum is a city in eastern anatolia (asian turkey).

Output: erzurum


Input: Consider Input: derby museum and art gallery was started in 1879 in a new building given to derby by a local brewer.


Output: derby museum and art gallery