you are likely to find Coal in/at/on Fire. Fire is related to Sorry. Sorry is related to Regret. 
Purpose is related to Transport. Truck is a type of Transport. Truck is related to Van. 
Coal --AtLocation--> Fire <--RelatedTo--> Sorry <--RelatedTo--> Regret 
Purpose <--RelatedTo--> Transport <--IsA-- Truck <--RelatedTo--> Van 