context: It is highly likely that Greg is a frog. It is unlikely that John moved to the office. There is almost no chance that Emily is a mouse. Chances are about even that if either John moved to the office, or Emily is a mouse, then Brian is a rhino. It is impossible that if either Emily is a mouse, or John moved to the office, then Lily is a lion. It is improbable that if either Emily is a mouse, or John moved to the office, then Bernhard is a swan.
hypothesis: There is little chance that brian is a rhino, or Emily is a mouse.
valid_hypothesis: There is little chance that brian is a rhino, or Emily is a mouse.
invalid_hypothesis: It is probably the case that brian is a rhino, or Emily is a mouse.
hypothesis_assertion: Brian is a rhino, or Emily is a mouse.