Q: .

Sam's drawing was hung just above Tina's and *it* did look much better with another one below it.

Do "it" and "Sam's drawing" mean the same thing?
A: yes
Q: .

Sam pulled up a chair to the piano , but *it* was broken, so he had to sing instead.

Do "it" and "the piano" mean the same thing?
A: yes
Q: .

Thomson visited Cooper 's grave in 1765. At that date *he* had been dead for five years.

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