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.

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

[EX Q]: de minimis is a legal term that means that small things do not matter in the law.
[EX A]: de minimis

[EX Q]: nectophryne (african tree toads) is a genus of true toads.
[EX A]:
nectophryne