context: We believe that John left the football. It is highly unlikely that Bernhard is green. It is highly likely that Fred went to the garden. It is probably the case that if Bernhard is green, or Fred went to the garden, then Lily is a rhino. It is probably the case that if John left the football, and Fred went to the garden, then Daniel took the football. Chances are about even that if Fred went to the garden, or John left the football, then Julius is a frog.
hypothesis: It is certain that fred went to the garden, or John left the football.
valid_hypothesis: It is certain that fred went to the garden, or John left the football.
invalid_hypothesis: There is almost no chance that fred went to the garden, or John left the football.
hypothesis_assertion: Fred went to the garden, or John left the football.