context: It is unlikely that John left the football. It is highly likely that Gertrude is a mouse. Chances are slight that Jason is bored. It is highly unlikely that if John left the football, or Jason is bored, then Greg is gray. It is impossible that if either Gertrude is a mouse, or John left the football, then Lily is white. There is almost no chance that if Jason is bored, or Gertrude is a mouse, then Daniel dropped the milk.
hypothesis: It is certain that greg is gray, or Lily is white.
valid_hypothesis: There is almost no chance that greg is gray, or Lily is white.
invalid_hypothesis: It is certain that greg is gray, or Lily is white.
hypothesis_assertion: Greg is gray, or Lily is white.