Problem: If "Fred and Alice had very warm down coats, but they were not enough for the cold in Alaska.", does it follow that "Fred and Alice were not enough for the cold in Alaska."?

Answer: no


Problem: If "Madonna fired her trainer because she slept with her boyfriend.", does it follow that "The trainer slept with her boyfriend."?

Answer: yes


Problem: If "John couldn't see the stage with Billy in front of him because he is so tall.", does it follow that "Billy is so tall."?

Answer: yes


Problem: If "Mr. Moncrieff visited Chester's luxurious New York apartment, thinking that it belonged to his son Edward. The result was that Mr. Moncrieff has decided to cancel Edward's allowance on the ground that he no longer requires his financial support.", does it follow that "Mr. Moncrieff no longer requires his financial support."?

Answer:
no