Premise: "Two girls talking while sitting on the stairs."\nBased on this premise, can we conclude that the hypothesis "Two girls are happily talking." is true?\nOptions:\n- yes\n- it is not possible to tell\n- no
A step-by-step solution is:
it is not possible to tell
Two girls talking while sitting on the stairs does not necessary that they are happily talking.

.

The final answer: it is not possible to tell