context: It is highly likely that Brian is a swan. It is probably the case that Emily is a cat. It is almost certain that Lily is a rhino.
hypothesis: It is probably not the case that either Brian is a swan, or Emily is a cat.
valid_hypothesis: It is probably not the case that either Brian is a swan, or Emily is a cat.
invalid_hypothesis: It is probably the case that either Brian is a swan, or Emily is a cat.
hypothesis_assertion: Either Brian is a swan, or Emily is a cat.