context: It is probable that Julius is a rhino. It is highly likely that Brian is a lion. It is probably not the case that Emily is a sheep.
hypothesis: There is little chance that either Julius is a rhino, or Emily is a sheep.
valid_hypothesis: There is a better than even chance that either Julius is a rhino, or Emily is a sheep.
invalid_hypothesis: There is little chance that either Julius is a rhino, or Emily is a sheep.
hypothesis_assertion: Either Julius is a rhino, or Emily is a sheep.