context: There is a very good chance that Sandra put down the milk. It is highly unlikely that Emily is a mouse. We believe that Brian is a swan. It is probably not the case that if Emily is a mouse, and Brian is a swan, then Julius is a lion. Chances are slight that if either Emily is a mouse, or Brian is a swan, then Bernhard is a lion. It is highly unlikely that if either Sandra put down the milk, or Brian is a swan, then Mary went to the garden.
hypothesis: It is highly unlikely that julius is a lion, or Emily is a mouse.
valid_hypothesis: It is highly unlikely that julius is a lion, or Emily is a mouse.
invalid_hypothesis: There is a better than even chance that julius is a lion, or Emily is a mouse.
hypothesis_assertion: Julius is a lion, or Emily is a mouse.