It is unlikely that Greg is yellow. There is little chance that Bernhard is a frog. We doubt that Lily is a frog. It is certain that if Bernhard is a frog, or Greg is yellow, then Julius is a swan. There is little chance that if either Bernhard is a frog, or Lily is a frog, then Mary is in the park. It is highly likely that if Lily is a frog, and Greg is yellow, then Antoine is bored.
It is unlikely that either Greg is yellow, or Mary is in the park.
It is unlikely that either Greg is yellow, or Mary is in the park.
It is highly likely that either Greg is yellow, or Mary is in the park.
Either Greg is yellow, or Mary is in the park.