Premise & hypothesis: Is the premise "A man touching a giant BlackBerry." true if "A man is demonstrating how an object operates."?
A: it is not possible to tell

Premise & hypothesis: Is the premise "This person is trying to build something." true if "This person is playing music."?
A: no

Premise & hypothesis: Is the premise "A little boy leans over a bridge while someone holds onto him." true if "A little boy is totally safe."?
A: no

Premise & hypothesis: Is the premise "Two dogs in a stream." true if "Two puppies are playing together in the stream."?
A:
it is not possible to tell