Rat is a type of Capture. Capture is a synonym of Catch. 
Hurt is related to Sad. Sad is related to Feeling. Feeling is related to Glad. Glad is the opposite of Disappointed. 
Rat --IsA--> Capture <--Synonym--> Catch 
Hurt <--RelatedTo--> Sad <--RelatedTo--> Feeling <--RelatedTo--> Glad <--Antonym--> Disappointed 