IN: Which person is he?
John remembered Bill because he had had been thinking about wicker chairs.
OUT: John

IN: Which person is he?
Technician Stepanic crafted advanced opticals for Leforge since he needed to be able to see well for his duties.
OUT: Technician Stepanic

IN: Which person is he?
James went to Sully's arcade but he refused to let him in.
OUT: Sully

IN: Which person is they?
The FBI usually take over the crime scene from the police because they sometimes need help to investigate the crime.
OUT:
the police