context: A man is on the side of a mountain and hiking around huge rocks.
hypothesis: It is impossible that the man is hiking up the side of the mountain to save his friend who got stuck at the top.
valid_hypothesis: It is impossible that the man is hiking up the side of the mountain to save his friend who got stuck at the top.
invalid_hypothesis: There is a better than even chance that the man is hiking up the side of the mountain to save his friend who got stuck at the top.
hypothesis_assertion: The man is hiking up the side of the mountain to save his friend who got stuck at the top.