context: There is little chance that Sandra took the football. There is little chance that Bernhard is a lion. It is highly likely that Mary got the milk. It is improbable that if either Mary got the milk, or Sandra took the football, then Emily is a sheep. It is probable that if Mary got the milk, and Bernhard is a lion, then Brian is a rhino. It is almost certain that if Bernhard is a lion, or Sandra took the football, then Greg is a frog.
hypothesis: It is unlikely that either Mary got the milk, or Emily is a sheep.
valid_hypothesis: There is a very good chance that either Mary got the milk, or Emily is a sheep.
invalid_hypothesis: It is unlikely that either Mary got the milk, or Emily is a sheep.
hypothesis_assertion: Either Mary got the milk, or Emily is a sheep.