Delay is the opposite of Express. Express is related to Transport. Transport is related to Vessel. Vessel is related to Device. 
People can be Optimistic. People is related to Surprise. 
Delay <--Antonym--> Express <--RelatedTo--> Transport <--RelatedTo--> Vessel <--RelatedTo--> Device 
Optimistic <--HasProperty-- People <--RelatedTo--> Surprise 