context: It is impossible that Mary went to the garden. Chances are about even that Brian is a rhino. It is probably not the case that Sandra left the milk.
hypothesis: It is highly unlikely that mary went to the garden, or Brian is a rhino.
valid_hypothesis: Chances are about even that mary went to the garden, or Brian is a rhino.
invalid_hypothesis: It is highly unlikely that mary went to the garden, or Brian is a rhino.
hypothesis_assertion: Mary went to the garden, or Brian is a rhino.