Premise & hypothesis: Is the premise "A person working in a market selling various items." true if "A person sells various items."?
A: it is not possible to tell

Premise & hypothesis: Is the premise "Three people at a library with computers." true if "People with electronics."?
A: yes

Premise & hypothesis: Is the premise "A group of twenty or so people posing for a picture." true if "The class is having their picture taken together."?
A: it is not possible to tell

Premise & hypothesis: Is the premise "A child sitting on a potty chair, looking at a book." true if "A child is doing his business."?
A:
yes