context: We believe that Daniel left the milk. We believe that Gertrude is a mouse. Chances are about even that Sandra got the apple. It is unlikely that if Gertrude is a mouse, or Daniel left the milk, then John went to the garden. It is impossible that if Daniel left the milk, and Gertrude is a mouse, then Jessica is a sheep. Chances are slight that if Sandra got the apple, and Daniel left the milk, then Bernhard is a frog.
hypothesis: There is a very good chance that john went to the garden, or Daniel left the milk.
valid_hypothesis: There is a very good chance that john went to the garden, or Daniel left the milk.
invalid_hypothesis: It is impossible that john went to the garden, or Daniel left the milk.
hypothesis_assertion: John went to the garden, or Daniel left the milk.