Premise & hypothesis: Is the premise "Young people out drinking in public." true if "The teenagers are enjoying their illicit alcohol drinks"?
A: it is not possible to tell

Premise & hypothesis: Is the premise "Three kids practice martial arts, one has a yellow belt, on a red belt and the other a white belt." true if "Three kids are practicing martial arts."?
A: yes

Premise & hypothesis: Is the premise "People are walking past a vendor on the street who has a lot of large mylar balloons." true if "No one wants to buy the street vendors large mylar balloons."?
A: it is not possible to tell

Premise & hypothesis: Is the premise "A man in red with a beer is talking to a woman with a gray sweatshirt and cornrows in her hair." true if "Someone is holding a beer."?
A:
yes