Premise & hypothesis: Is the premise "A customer at the checkout of a grocery store." true if "The customer has a rather large order, and is waiting on the checkout person to finishing ringing up his/her order."?
A: it is not possible to tell

Premise & hypothesis: Is the premise "A woman smiles while posing with a very large fish." true if "A woman posing with a fish."?
A: yes

Premise & hypothesis: Is the premise "A person doing the backstroke in an outdoor pool." true if "A person is drowning."?
A: no

Premise & hypothesis: Is the premise "A man and two young children are swimming in a pool adjacent to two white water slides with a lifeguard watching upon them." true if "the people are on their couch"?
A:
no