context: A man in a green shirt is singing karaoke while a young woman with long brownish hair stands by and listens.
hypothesis: It is improbable that a man is singing his girlfriend's favorite song as she watches.
valid_hypothesis: There is a better than even chance that a man is singing his girlfriend's favorite song as she watches.
invalid_hypothesis: It is improbable that a man is singing his girlfriend's favorite song as she watches.
hypothesis_assertion: A man is singing his girlfriend's favorite song as she watches.