Q: When Tatyana reached the cabin, her mother was sleeping. She was careful not to disturb her, undressing and climbing back into *her* berth.
Are "Tatyana" and "her" the same?
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A: yes

Q: When Mr. Bond , the veterinarian, came to look at the black horse that lay groaning on the grass, he felt *him* all over, and shook his head; one of his legs was broken.
Are "Mr. Bond" and "him" the same?
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A: no

Q: Sam's drawing was hung just above Tina's and *it* did look much better with another one above it.
Are "Sam's drawing" and "it" the same?
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A:
no