context: There is almost no chance that John left the apple. There is almost no chance that Lily is a frog. It is likely that Jessica is a sheep. It is impossible that if John left the apple, or Jessica is a sheep, then Mary went to the kitchen. It is unlikely that if either Jessica is a sheep, or John left the apple, then Bernhard is gray. We believe that if either John left the apple, or Jessica is a sheep, then Sandra took the milk.
hypothesis: Chances are about even that sandra took the milk, and Jessica is a sheep.
valid_hypothesis: Chances are about even that sandra took the milk, and Jessica is a sheep.
invalid_hypothesis: It is highly unlikely that sandra took the milk, and Jessica is a sheep.
hypothesis_assertion: Sandra took the milk, and Jessica is a sheep.