context: It is highly likely that Sandra left the football. It is improbable that Emily is a sheep. It is probably not the case that Gertrude is a mouse. Chances are about even that if Emily is a sheep, and Sandra left the football, then Greg is white. Chances are about even that if Gertrude is a mouse, or Emily is a sheep, then John moved to the office. It is probably the case that if either Gertrude is a mouse, or Emily is a sheep, then Brian is a lion.
hypothesis: We believe that john moved to the office, or Gertrude is a mouse.
valid_hypothesis: It is probably not the case that john moved to the office, or Gertrude is a mouse.
invalid_hypothesis: We believe that john moved to the office, or Gertrude is a mouse.
hypothesis_assertion: John moved to the office, or Gertrude is a mouse.