context: It is unlikely that Brian is a lion. It is unlikely that Mary went to the kitchen. It is probable that Julius is a rhino. Chances are slight that if Brian is a lion, and Julius is a rhino, then Lily is green. We believe that if Julius is a rhino, and Brian is a lion, then Daniel left the football. It is highly likely that if either Mary went to the kitchen, or Julius is a rhino, then John put down the milk.
hypothesis: It is improbable that either Daniel left the football, or Julius is a rhino.
valid_hypothesis: There is a better than even chance that either Daniel left the football, or Julius is a rhino.
invalid_hypothesis: It is improbable that either Daniel left the football, or Julius is a rhino.
hypothesis_assertion: Either Daniel left the football, or Julius is a rhino.