Symbol is related to Degree. Degree is related to Dig. Dig is a synonym of Get. Borrow is a type of Get. 
Appointment is a synonym of Establishment. Establishment is related to Rest. Rest is related to Play. Cave can be used for Play. 
Symbol <--RelatedTo--> Degree <--RelatedTo--> Dig <--Synonym--> Get <--IsA-- Borrow 
Appointment <--Synonym--> Establishment <--RelatedTo--> Rest <--RelatedTo--> Play <--UsedFor-- Cave 