context: It is almost certain that Sandra got the football. It is improbable that John went to the garden. There is little chance that Greg is a swan. It is unlikely that if John went to the garden, and Sandra got the football, then Emily is a mouse. It is unlikely that if either John went to the garden, or Sandra got the football, then Brian is green. There is a very good chance that if Sandra got the football, or Greg is a swan, then Lily is a rhino.
hypothesis: It is almost certain that either Sandra got the football, or Emily is a mouse.
valid_hypothesis: It is almost certain that either Sandra got the football, or Emily is a mouse.
invalid_hypothesis: It is improbable that either Sandra got the football, or Emily is a mouse.
hypothesis_assertion: Either Sandra got the football, or Emily is a mouse.