context: It is probable that Julius is a lion. There is little chance that John went to the office. It is improbable that Lily is green. It is highly likely that if either Lily is green, or John went to the office, then Bernhard is a frog. It is probably the case that if Julius is a lion, or John went to the office, then Mary dropped the milk. It is almost certain that if either Julius is a lion, or John went to the office, then Greg is a frog.
hypothesis: Chances are about even that mary dropped the milk, and Julius is a lion.
valid_hypothesis: Chances are about even that mary dropped the milk, and Julius is a lion.
invalid_hypothesis: There is almost no chance that mary dropped the milk, and Julius is a lion.
hypothesis_assertion: Mary dropped the milk, and Julius is a lion.