context: We believe that Jessica is a mouse. It is probable that Lily is white. It is almost certain that John discarded the apple. There is a better than even chance that if Jessica is a mouse, and John discarded the apple, then Julius is a rhino. It is highly unlikely that if John discarded the apple, or Jessica is a mouse, then Mary went to the kitchen. There is almost no chance that if Lily is white, or Jessica is a mouse, then Bernhard is a swan.
hypothesis: There is a very good chance that julius is a rhino, or Lily is white.
valid_hypothesis: There is a very good chance that julius is a rhino, or Lily is white.
invalid_hypothesis: There is almost no chance that julius is a rhino, or Lily is white.
hypothesis_assertion: Julius is a rhino, or Lily is white.