context: It is almost certain that Mary went to the kitchen. It is almost certain that Greg is yellow. It is probably the case that Sandra took the milk.
hypothesis: It is certain that sandra took the milk, or Greg is yellow.
valid_hypothesis: It is certain that sandra took the milk, or Greg is yellow.
invalid_hypothesis: There is little chance that sandra took the milk, or Greg is yellow.
hypothesis_assertion: Sandra took the milk, or Greg is yellow.