Only those who play well in gateball can join the gateball association; all people in the gateball association wear sun hats, and some retired comrades are members of the gateball association; no one in a certain street will play gateball. One thing that cannot be confirmed from this is:. ['No one on the street is a member of the gateball association.', 'Some people on the street are wearing sun hats.', 'Some retired comrades wear sun hats.', 'Some retired veteran commendants play well.']