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.

[Q]: aerospace engineering is a field of engineering that specializes in vehicles that move in fluids.
[A]: aerospace engineering


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


[Q]: siegfried rauch (2 april 1932 – 11 march 2018) was a german movie and television actor.
[A]:
siegfried rauch