context: It is probably the case that Sandra dropped the milk. It is probable that Brian is a frog. There is little chance that John went to the garden.
hypothesis: It is highly likely that brian is a frog, or Sandra dropped the milk.
valid_hypothesis: It is highly likely that brian is a frog, or Sandra dropped the milk.
invalid_hypothesis: Chances are slight that brian is a frog, or Sandra dropped the milk.
hypothesis_assertion: Brian is a frog, or Sandra dropped the milk.