Carrier is a type of Immune. Carrier is related to Record. Record is related to Back. 
Cake is related to Insect. Brick is a type of Insect. Brick is etymologically related to Break. Break is related to Painful. 
Immune <--IsA-- Carrier <--RelatedTo--> Record <--RelatedTo--> Back 
Cake <--RelatedTo--> Insect <--IsA-- Brick --EtymologicallyRelatedTo--> Break <--RelatedTo--> Painful 