context: The bears are facing each other with their mouths wide open.
hypothesis: It is impossible that two bears are facing each other in the woods with their mouths open.
valid_hypothesis: We believe that two bears are facing each other in the woods with their mouths open.
invalid_hypothesis: It is impossible that two bears are facing each other in the woods with their mouths open.
hypothesis_assertion: Two bears are facing each other in the woods with their mouths open.