IN: Which person is they?
The preservation society managed to rescue a rare species of birds so they will have the chance to survive.
OUT: a rare species of birds

IN: Which person is he?
John hit Carl and he hit back.
OUT: John

IN: Which person is he?
Americans preferred Obama to McCain because he chose Joe Biden as his runing-mate.
OUT: Obama

IN: Which person is he?
Technician Stepanic crafted advanced opticals for Leforge, but he would still prefer to see without such devices.
OUT:
Leforge