Q: .

I was trying to open the lock with the key , but someone had filled the keyhole with chewing gum, and I couldn't get *it* out.

Do "it" and "the key" mean the same thing?
A: no
Q: .

The boy continued to whip the pony , and eventually the pony threw him over. John laughed out quite loud. "Good for *him* ," he said.

Do "him" and "pony" mean the same thing?
A: yes
Q: .

Kirilov ceded the presidency to Shatov because *he* was less popular.

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