Introduce is a type of Initiate. Initiate is a type of People. People can be Chinese. 
Delivery is related to Mail. Mail is related to Envelope. Envelope is related to Paper. Paper is related to Object. 
Introduce --IsA--> Initiate --IsA--> People --HasProperty--> Chinese 
Delivery <--RelatedTo--> Mail <--RelatedTo--> Envelope <--RelatedTo--> Paper <--RelatedTo--> Object 