Attend is related to Listen. the last thing you do when you Listen is Answer. Answer is a type of Solve. 
Rate is a type of Judge. Rate is related to Pay. Pay is related to Afford. 
Attend <--RelatedTo--> Listen --HasLastSubevent--> Answer --IsA--> Solve 
Judge <--IsA-- Rate <--RelatedTo--> Pay <--RelatedTo--> Afford 