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: an adventure is something exciting that happens to someone.

Output: adventure


Input: Consider Input: the occipital lobe is the back part of a mammal's brain.

Output: occipital lobe


Input: Consider Input: "supersatellite'" is a 1995 alternative rock song by the canadian alternative rock band our lady peace and is the fourth single from their debut studio album "naveed", which was released in 1994.


Output: supersatellite