context: It is improbable that Lily is a frog. It is almost certain that Jessica is a mouse. It is probably not the case that Fred left the football. It is probably the case that if Lily is a frog, and Jessica is a mouse, then Greg is a swan. We believe that if Lily is a frog, and Jessica is a mouse, then Brian is a frog. It is unlikely that if Fred left the football, and Jessica is a mouse, then John went to the kitchen.
hypothesis: Chances are slight that john went to the kitchen, or Greg is a swan.
valid_hypothesis: Chances are slight that john went to the kitchen, or Greg is a swan.
invalid_hypothesis: It is certain that john went to the kitchen, or Greg is a swan.
hypothesis_assertion: John went to the kitchen, or Greg is a swan.