context: We believe that Daniel is in the garden. It is highly unlikely that Greg is a lion. It is impossible that John picked up the milk. Chances are slight that if John picked up the milk, or Greg is a lion, then Lily is green. It is highly unlikely that if either Daniel is in the garden, or John picked up the milk, then Julius is a rhino. We doubt that if Greg is a lion, and Daniel is in the garden, then Bernhard is a frog.
hypothesis: It is impossible that julius is a rhino, and Lily is green.
valid_hypothesis: It is impossible that julius is a rhino, and Lily is green.
invalid_hypothesis: It is probably the case that julius is a rhino, and Lily is green.
hypothesis_assertion: Julius is a rhino, and Lily is green.