Chip is related to Lay. Lay is related to Go. Go is related to Return. 
Selection is related to Appoint. Appointment is derived from Appoint. Appointment is related to Doctor. Doctor is related to Unit. 
Chip <--RelatedTo--> Lay <--RelatedTo--> Go <--RelatedTo--> Return 
Selection <--RelatedTo--> Appoint <--DerivedFrom-- Appointment <--RelatedTo--> Doctor <--RelatedTo--> Unit 