context: It is highly unlikely that Brian is a frog. Chances are slight that Bernhard is yellow. It is probably the case that John took the apple. It is improbable that if Brian is a frog, and Bernhard is yellow, then Winona is a mouse. It is probable that if Bernhard is yellow, and Brian is a frog, then Greg is a rhino. It is likely that if either Bernhard is yellow, or John took the apple, then Jeff went to the garden.
hypothesis: It is highly unlikely that brian is a frog, and John took the apple.
valid_hypothesis: It is highly unlikely that brian is a frog, and John took the apple.
invalid_hypothesis: We believe that brian is a frog, and John took the apple.
hypothesis_assertion: Brian is a frog, and John took the apple.