Tent is a type of Web. Web is related to Silk. Silk is related to Road. 
Cargo is related to Helicopter. you are likely to find Helicopter in/at/on Airport. you are likely to find Landing in/at/on Airport. 
Tent --IsA--> Web <--RelatedTo--> Silk <--RelatedTo--> Road 
Cargo <--RelatedTo--> Helicopter --AtLocation--> Airport <--AtLocation-- Landing 