context: A black dog with a blue collar is jumping into the water.
hypothesis: Chances are about even that a black dog wearing a blue collar is chasing something into the water.
valid_hypothesis: Chances are about even that a black dog wearing a blue collar is chasing something into the water.
invalid_hypothesis: It is impossible that a black dog wearing a blue collar is chasing something into the water.
hypothesis_assertion: A black dog wearing a blue collar is chasing something into the water.