context: There is little chance that Bill left the apple. It is probably the case that Lily is white. It is probably the case that Brian is gray.
hypothesis: We believe that brian is gray, or Bill left the apple.
valid_hypothesis: We believe that brian is gray, or Bill left the apple.
invalid_hypothesis: It is impossible that brian is gray, or Bill left the apple.
hypothesis_assertion: Brian is gray, or Bill left the apple.