context: Two people walking down a narrow alley with large buildings on each side.
hypothesis: Chances are slight that two people are walking down an alley on their way home from work.
valid_hypothesis: Chances are slight that two people are walking down an alley on their way home from work.
invalid_hypothesis: There is a very good chance that two people are walking down an alley on their way home from work.
hypothesis_assertion: Two people are walking down an alley on their way home from work.