Premise & hypothesis: Is the premise "A man in a blue ball cap and wearing no shirt working on a roof." true if "The man is wearing blue jeans."?
A: it is not possible to tell

Premise & hypothesis: Is the premise "Many two-person kayaks fill a river surrounded by trees." true if "Kayaks are in a river."?
A: yes

Premise & hypothesis: Is the premise "A girl in a black leotard dances while a girl in a red leotard and torn stockings watching in the middle of a street." true if "Two girls are having a water balloon fight."?
A: no

Premise & hypothesis: Is the premise "A person doing bicycle tricks on a wooden ramp." true if "A bicyclist is doing tricks on a wooden ramp to impress his friends."?
A:
it is not possible to tell