Is the premise "A wakeboarder is performing a trick on a rail." true if "A tall wakeboarder."?
it is not possible to tell
Is the premise "A tall man in a gray suit walking towards the train." true if "A man in a gray suit is sitting on his couch at home."?
no
Is the premise "A man with a surprised look on his face holds a large portfolio." true if "The man is eating potato chips."?
no
Is the premise "A man in green shorts and sunglasses is doing stomach crunches by the beach." true if "A man is working out at the beach."?
it is not possible to tell