The following sentences that have the relation of entailment are .
A、a. John killed Bill b. Bill died
B、a. I saw a boy b. I saw a child
C、a. John is a bachelor. b. John is unmarried
D、a. He has been to France. b. He has been to Europe.
E、a. The queen of England is old. b. England has a queen.
F、a. Is your father at home? b. You have a father.
G、a. John is married b. John is a bachelor