context: It is probable that Brian is a lion. There is almost no chance that Greg is a swan. It is highly likely that Bernhard is a frog. Chances are about even that if Bernhard is a frog, or Brian is a lion, then Julius is green. There is almost no chance that if either Greg is a swan, or Brian is a lion, then John went to the kitchen. It is improbable that if Greg is a swan, and Bernhard is a frog, then Daniel left the milk.
hypothesis: Chances are about even that julius is green, or Daniel left the milk.
valid_hypothesis: Chances are about even that julius is green, or Daniel left the milk.
invalid_hypothesis: It is highly unlikely that julius is green, or Daniel left the milk.
hypothesis_assertion: Julius is green, or Daniel left the milk.