context: It is impossible that Brian is a rhino. It is probably the case that Greg is green. It is certain that Emily is a cat. It is likely that if Greg is green, and Emily is a cat, then Lily is yellow. It is unlikely that if either Brian is a rhino, or Emily is a cat, then Winona is a wolf. It is almost certain that if Emily is a cat, and Greg is green, then Bernhard is a swan.
hypothesis: It is certain that greg is green, or Emily is a cat.
valid_hypothesis: It is certain that greg is green, or Emily is a cat.
invalid_hypothesis: It is improbable that greg is green, or Emily is a cat.
hypothesis_assertion: Greg is green, or Emily is a cat.