IN: Which person is he?
Doctor Igor was interrogated by Colonel Marshall because he had vital information on the location of enemy forces.
OUT: Doctor Igor

IN: Which person is he?
Peter Griffin often pokes fun at Chris, because he enjoys doing it.
OUT: Peter Griffin

IN: Which person is it?
Paper beats rock, but it is beaten by scissors.
OUT: Paper

IN: Which person is he?
The youth outran the old man because he was in shape.
OUT:
The youth