context: It is likely that Sandra took the football. It is probably not the case that Bernhard is a swan. It is probably the case that Lily is a rhino. It is certain that if either Lily is a rhino, or Sandra took the football, then Emily is a sheep. There is a better than even chance that if Bernhard is a swan, and Lily is a rhino, then John left the football. It is highly likely that if Sandra took the football, and Lily is a rhino, then Jeff went to the kitchen.
hypothesis: There is almost no chance that either Bernhard is a swan, or Sandra took the football.
valid_hypothesis: There is a better than even chance that either Bernhard is a swan, or Sandra took the football.
invalid_hypothesis: There is almost no chance that either Bernhard is a swan, or Sandra took the football.
hypothesis_assertion: Either Bernhard is a swan, or Sandra took the football.