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]: zinc phosphate is a chemical compound.
[A]: zinc phosphate


[Q]: pennywise is an american melodic hardcore band.
[A]: pennywise


[Q]: a deemster is a judge in the isle of man.
[A]:
deemster