It is probably not the case that John dropped the apple. We doubt that Bernhard is a swan. It is probably not the case that Greg is yellow.
It is highly unlikely that greg is yellow, and Bernhard is a swan.
It is highly unlikely that greg is yellow, and Bernhard is a swan.
It is almost certain that greg is yellow, and Bernhard is a swan.
Greg is yellow, and Bernhard is a swan.