Question: If "Tom gave Ralph a lift to school so he wouldn't have to walk.", can we conclude that "Tom wouldn't have to walk."?
Answer: no

Question: 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.", can we conclude that "Edward no longer requires his financial support."?
Answer: yes

Question: If "Bob paid for Charlie's college education. He is very generous.", can we conclude that "Bob is very generous."?
Answer:
yes