context: We doubt that John went to the garden. Chances are slight that Lily is a frog. There is almost no chance that Emily is a mouse. It is probably the case that if either Emily is a mouse, or John went to the garden, then Bernhard is a lion. It is certain that if either Emily is a mouse, or John went to the garden, then Mary got the milk. It is highly likely that if Emily is a mouse, or John went to the garden, then Greg is a rhino.
hypothesis: It is probable that bernhard is a lion, or Greg is a rhino.
valid_hypothesis: We doubt that bernhard is a lion, or Greg is a rhino.
invalid_hypothesis: It is probable that bernhard is a lion, or Greg is a rhino.
hypothesis_assertion: Bernhard is a lion, or Greg is a rhino.