context: It is highly unlikely that Julius is a swan. It is probable that Mary picked up the milk. Chances are about even that Bernhard is a rhino. It is probable that if either Julius is a swan, or Bernhard is a rhino, then Daniel took the football. It is unlikely that if either Julius is a swan, or Bernhard is a rhino, then Sandra got the apple. It is highly unlikely that if Bernhard is a rhino, and Julius is a swan, then Winona is a mouse.
hypothesis: We believe that daniel took the football, and Julius is a swan.
valid_hypothesis: There is almost no chance that daniel took the football, and Julius is a swan.
invalid_hypothesis: We believe that daniel took the football, and Julius is a swan.
hypothesis_assertion: Daniel took the football, and Julius is a swan.