Input: Can we say "Billy cried because Toby wouldn't accept Billy's toy." if "Billy cried because Toby wouldn't accept his toy."?

Output: yes


Input: Can we say "The concert continued until 10." if "In the middle of the outdoor concert, the rain started falling, but it continued until 10."?

Output: yes


Input: Can we say "Tatyana doubted if Tatyana slept." if "By rolling over in her upper berth, Tatyana could look over the edge of it and see her mother plainly. How very small and straight and rigid she lay in the bunk below! Her eyes were closed, but Tatyana doubted if she slept."?

Output:
no