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: noel cobb (21 march 1938 – 2 january 2015) was an american-born british philosopher, psychologist, and author.

Output: noel cobb


Input: Consider Input: a sandwich panel is a kind of composite material, which is usually made of two components: a small outside layer (which is the same on both sides), and an inside layer, which is used to get certain properties, for example insulation or fire resistance.

Output: sandwich panel


Input: Consider Input: lissette martinez (born 1971), is the lead electrical engineer for the space experiment module program at the wallops flight facility, which is part of nasa's goddard space flight center.


Output: lissette martinez