People are walking the marathon for a cause .
It is impossible that some of the people walking in the marathon are afflicted with the cause that they are supporting .
It is highly likely that some of the people walking in the marathon are afflicted with the cause that they are supporting .
It is impossible that some of the people walking in the marathon are afflicted with the cause that they are supporting .
Some of the people walking in the marathon are afflicted with the cause that they are supporting .