The leader of the party is a famous scientist. ✬

He is a great scientist. ✬

He is a scientist. ✬

She grew up to be a great scientist. ✬

A true scientist wouldn't think like that. ✬

Tom is a scientist. ✬

The hero finally defeated the evil scientist. ✬

I'm not a scientist. ✬

You always said you wanted to become a scientist. Why didn't you? ✬

I thought you were a scientist. ✬