context: It is impossible that Lily is a lion. It is impossible that Bernhard is green. It is probably the case that Brian is yellow. It is impossible that if Brian is yellow, and Bernhard is green, then Jessica is a mouse. It is highly likely that if Brian is yellow, and Lily is a lion, then Julius is a swan. It is unlikely that if either Bernhard is green, or Brian is yellow, then Mary left the football.
hypothesis: We believe that mary left the football, or Bernhard is green.
valid_hypothesis: Chances are slight that mary left the football, or Bernhard is green.
invalid_hypothesis: We believe that mary left the football, or Bernhard is green.
hypothesis_assertion: Mary left the football, or Bernhard is green.