Is the premise "A young man in a backward baseball cap is standing on a skateboard leaning backward, putting his weight on one foot, on a blue block of concrete." true if "The boy is taking a break from doing skateboard tricks."?
it is not possible to tell
Is the premise "Three people walking down an urban street." true if "Three people are on an urban street."?
yes
Is the premise "Two women are jumping while playing volleyball on the beach." true if "two women are playing sports outside."?
yes
Is the premise "A young man with a mohawk haircut leaning on a chain while holding some portraits." true if "a young man is leaning on a chair"?
yes