instruction:
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.
question:
a modest proposal is a famous work of satire by irish writer jonathan swift.
answer:
a modest proposal


question:
nick halling is a british sportscaster.
answer:
nick halling


question:
ngc 7538 is a diffuse nebula in the constellation of cepheus.
answer:

ngc 7538