context: A man holds up a sign that reads "tattoo" as many people walk near him.
hypothesis: It is probable that a man is holding a sign a yelling "tattoo".
valid_hypothesis: It is unlikely that a man is holding a sign a yelling "tattoo".
invalid_hypothesis: It is probable that a man is holding a sign a yelling "tattoo".
hypothesis_assertion: A man is holding a sign a yelling "tattoo".