Ill is related to Sick. Sick is related to Fever. Fever is related to Hot. 
Milk is related to Color. Color is related to Design. Engineer is a type of Design. 
Ill <--RelatedTo--> Sick <--RelatedTo--> Fever <--RelatedTo--> Hot 
Milk <--RelatedTo--> Color <--RelatedTo--> Design <--IsA-- Engineer 