IN: Which person is he?
Henry changed Jack's oil, because he gave him money.
OUT: Jack

IN: Which person is they?
Consultants are hired by companies to perform specialized tasks because they are easier to hire than trying to perform a task oneself.
OUT: Consultants

IN: Which person is he?
Mike helped Jack with his assignment because he felt like doing so.
OUT: Mike

IN: Which person is he?
Prince Goro lectured Cano about the greatness of the emperor since he wanted to make him understand his power.
OUT:
Prince Goro