context: It is probable that Mary went to the garden. It is probably the case that Bernhard is a swan. It is unlikely that John put down the milk.
hypothesis: Chances are about even that bernhard is a swan, and Mary went to the garden.
valid_hypothesis: Chances are about even that bernhard is a swan, and Mary went to the garden.
invalid_hypothesis: It is highly unlikely that bernhard is a swan, and Mary went to the garden.
hypothesis_assertion: Bernhard is a swan, and Mary went to the garden.