context: It is unlikely that Sandra dropped the milk. There is little chance that Greg is white. Chances are slight that Brian is a swan.
hypothesis: It is probably not the case that greg is white, or Sandra dropped the milk.
valid_hypothesis: It is probably not the case that greg is white, or Sandra dropped the milk.
invalid_hypothesis: We believe that greg is white, or Sandra dropped the milk.
hypothesis_assertion: Greg is white, or Sandra dropped the milk.