context: We doubt that Sandra dropped the apple. It is improbable that Bernhard is gray. It is probably the case that John left the milk.
hypothesis: It is probable that either Bernhard is gray, or John left the milk.
valid_hypothesis: It is probable that either Bernhard is gray, or John left the milk.
invalid_hypothesis: There is little chance that either Bernhard is gray, or John left the milk.
hypothesis_assertion: Either Bernhard is gray, or John left the milk.