Q: .

John promised Bill to leave, so an hour later *he* left.

Do "he" and "John" mean the same thing?
A: yes
Q: .

John ordered Bill to leave, so an hour later *he* left.

Do "he" and "Bill" mean the same thing?
A: yes
Q: .

Paul tried to call George on the phone, but *he* wasn't available.

Do "he" and "Paul" mean the same thing?
A:
no