He is an expert in paleoanthropology, investigating archaeological sites around the world.

He used a thesaurus to find suitable words for writing his essay.

He was sprayed with tear gas during the demonstration.

A large family meeting was held where all relatives gathered.

He discreetly swapped my wallet.

He is an expert in ichthyology and has a deep knowledge of marine life.

Simians are considered close relatives of humans.

He is an expert in anthropology.

He is very excellent as a first baseman.

I am organizing the documents.