context: It is probably the case that Mary put down the milk. There is little chance that Brian is a frog. It is probably the case that Julius is a rhino.
hypothesis: We believe that brian is a frog, and Mary put down the milk.
valid_hypothesis: It is highly unlikely that brian is a frog, and Mary put down the milk.
invalid_hypothesis: We believe that brian is a frog, and Mary put down the milk.
hypothesis_assertion: Brian is a frog, and Mary put down the milk.