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.

zhejiangopterus is a pterosaur that was found in china.
zhejiangopterus

the canton of bellerive-sur-allier is an administrative division of the allier department in central france.
canton of bellerive-sur-allier

bob holiday (november 12, 1932 – january 27, 2017) was an american actor.

bob holiday