context: We believe that Greg is a lion. It is highly unlikely that Lily is green. There is a very good chance that Winona is a mouse. Chances are slight that if Greg is a lion, and Lily is green, then Brian is a swan. It is impossible that if Lily is green, and Winona is a mouse, then Mary went to the office. It is impossible that if either Lily is green, or Greg is a lion, then Sandra got the milk.
hypothesis: It is unlikely that winona is a mouse, or Sandra got the milk.
valid_hypothesis: There is a very good chance that winona is a mouse, or Sandra got the milk.
invalid_hypothesis: It is unlikely that winona is a mouse, or Sandra got the milk.
hypothesis_assertion: Winona is a mouse, or Sandra got the milk.