Premise & hypothesis: Is the premise "Children are reading and writing." true if "Children have reading and writing materials."?
A: yes

Premise & hypothesis: Is the premise "A group of people are having a picnic at the park." true if "People are eating food."?
A: yes

Premise & hypothesis: Is the premise "People white water rafting." true if "People are swimming."?
A: no

Premise & hypothesis: Is the premise "Three people are playing in a snowy landscape, one is holding a large snowball ready to drop it on the others." true if "the people are having a snow ball fight"?
A:
it is not possible to tell