context: It is certain that Emily is a sheep. It is improbable that Mary went to the kitchen. There is little chance that Daniel got the milk. It is almost certain that if either Mary went to the kitchen, or Daniel got the milk, then Bernhard is a lion. There is almost no chance that if Daniel got the milk, or Mary went to the kitchen, then Julius is white. Chances are about even that if Daniel got the milk, and Emily is a sheep, then Brian is yellow.
hypothesis: It is highly likely that mary went to the kitchen, or Brian is yellow.
valid_hypothesis: Chances are slight that mary went to the kitchen, or Brian is yellow.
invalid_hypothesis: It is highly likely that mary went to the kitchen, or Brian is yellow.
hypothesis_assertion: Mary went to the kitchen, or Brian is yellow.