Problem: Is "Billy cried because Toby wouldn't accept Billy's toy." true if "Billy cried because Toby wouldn't accept his toy."?
Answer: yes

Problem: Is "Even one thread uncut will leave the right size too small." true if "It is not easy to space buttonholes exactly the same distance apart, and it is very difficult to cut them precisely the right size. The tiniest slip of the scissors will make the hole too large, and even one thread uncut will leave it too small."?
Answer: no

Problem: Is "Martin is very successful." true if "Pete envies Martin because he is very successful."?
Answer: yes

Problem: Is "Billy cried because Toby wouldn't share Billy's toy." true if "Billy cried because Toby wouldn't share his toy."?
Answer:
no