Is the premise "A crowd of people enjoy a sunny day at the dock." true if "A crowd of people celebrating 4th of July."?
it is not possible to tell
Is the premise "A man is riding a dirt bike on a steep tilt." true if "The man is outside."?
yes
Is the premise "a boy in a purple shirt is doing a skateboard stunt on a wooden ramp beside a white building." true if "A boy is showing off his skating skills to his friends"?
it is not possible to tell
Is the premise "This is an oriental chef preparing meats." true if "The person is using a large cleaver"?
it is not possible to tell