context: A man is singing on stage with his fingers in a stuffed bear's nose.
hypothesis: It is probably not the case that a man on stage singing accompanied by a stuffed bear is a ventriloquist.
valid_hypothesis: It is probably not the case that a man on stage singing accompanied by a stuffed bear is a ventriloquist.
invalid_hypothesis: It is almost certain that a man on stage singing accompanied by a stuffed bear is a ventriloquist.
hypothesis_assertion: A man on stage singing accompanied by a stuffed bear is a ventriloquist.