Is the premise "A man and woman get in the boxing stance to start their exercise." true if "A woman gets ready to box with a man for a prize."?
it is not possible to tell
Is the premise "a guy enjoying a day playing Frisbee." true if "A man is outside playing a game."?
yes
Is the premise "A person is working on the machine." true if "a person does not work on a machine"?
no
Is the premise "Four silhouettes decorate the horizon's sunset." true if "The four people are taking in the beautiful sunset off the coast of California."?
it is not possible to tell