Cause is related to Disease. Disease is related to Chicken. Chicken is related to Finger. 
Social is related to Class. Estate is a type of Class. Estate is related to Mansion. 
Cause <--RelatedTo--> Disease <--RelatedTo--> Chicken <--RelatedTo--> Finger 
Social <--RelatedTo--> Class <--IsA-- Estate <--RelatedTo--> Mansion 