Dam is a type of Animal. Animal is related to Cage. you are likely to find Feather in/at/on Cage. Feather is a type of Row. 
Cave can be used for Darkness. Cave is related to Fire. Fire can Burn. Burn is related to Painful. 
Dam --IsA--> Animal <--RelatedTo--> Cage <--AtLocation-- Feather --IsA--> Row 
Darkness <--UsedFor-- Cave <--RelatedTo--> Fire --CapableOf--> Burn <--RelatedTo--> Painful 