It is impossible that Brian is yellow. It is probably not the case that Sandra took the football. It is improbable that Lily is a frog. There is a very good chance that if either Lily is a frog, or Sandra took the football, then Mary moved to the garden. It is unlikely that if either Lily is a frog, or Brian is yellow, then Bernhard is white. It is certain that if Sandra took the football, and Brian is yellow, then Greg is a lion.
It is probably not the case that brian is yellow, or Sandra took the football.
It is probably not the case that brian is yellow, or Sandra took the football.
We believe that brian is yellow, or Sandra took the football.
Brian is yellow, or Sandra took the football.