Boil is related to Hot. Hot is related to Shade. Hat can be used for Shade. Hat is related to Detective. 
Known is a form of Know. Know is related to Tell. 
Boil <--RelatedTo--> Hot <--RelatedTo--> Shade <--UsedFor-- Hat <--RelatedTo--> Detective 
Known --FormOf--> Know <--RelatedTo--> Tell 