A man with glasses is sitting a chair playing the oboe while a man in a purple shirt plays percussion and spectators look on .
It is probably not the case that the man playing the oboe and the man playing percussion are friends .
There is a very good chance that the man playing the oboe and the man playing percussion are friends .
It is probably not the case that the man playing the oboe and the man playing percussion are friends .
The man playing the oboe and the man playing percussion are friends .