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:
francis george steiner, fba (born april 23, 1929) is a french-born american literary critic, essayist, philosopher, novelist, and educator.
answer:
george steiner

question:
cerebral dema (or cerebral edema) is a build-up of extra fluid in the brain.
answer:
cerebral edema

question:
a sawfly is an insect belonging to suborder symphyta of the order hymenoptera.
answer:
sawfly