Network is related to News. News is related to History. History is related to Civilization. Civilization is related to Developing. 
Retreat is related to War. War is related to Oil. Oil is related to Origin. Origin is related to Cloud. 
Network <--RelatedTo--> News <--RelatedTo--> History <--RelatedTo--> Civilization <--RelatedTo--> Developing 
Retreat <--RelatedTo--> War <--RelatedTo--> Oil <--RelatedTo--> Origin <--RelatedTo--> Cloud 