Serving is related to Neat. Neat is a synonym of Cattle. Cattle is related to Farmer. Farmer is related to Sheep. 
Internal is related to Lung. Lung is related to Chest. Chest is related to Inside. Inside is related to Private. 
Serving <--RelatedTo--> Neat <--Synonym--> Cattle <--RelatedTo--> Farmer <--RelatedTo--> Sheep 
Internal <--RelatedTo--> Lung <--RelatedTo--> Chest <--RelatedTo--> Inside <--RelatedTo--> Private 