context: It is impossible that Brian is a rhino. It is almost certain that Emily is a cat. It is highly unlikely that Sandra got the football.
hypothesis: It is impossible that sandra got the football, or Emily is a cat.
valid_hypothesis: It is almost certain that sandra got the football, or Emily is a cat.
invalid_hypothesis: It is impossible that sandra got the football, or Emily is a cat.
hypothesis_assertion: Sandra got the football, or Emily is a cat.