Cleaning solutions for photoresist are disclosed which are useful for cleaning a semiconductor substrate in the last step of development when photoresist patterns are formed. An association is modeled by a particular class, which includes two or more references to other classes; the association is implemented by a corresponding provider. Such community data hub systems and methods may provide one or more of the following: storage of scoring data, swing data, ball flight data, andor equipment data for multiple golfers; at least some level of individual access to the stored data for the community; andor electronic interaction between golfers within the community. A hollow conduit extends between the lamp holders.