Exact is related to Middle. Middle is related to Knee. Knee is related to Part. Part is related to Road. 
you are likely to find Shirt in/at/on Drawer. you are likely to find Cotton in/at/on Shirt. Cotton is related to Cloud. Cloud is related to Pillow. 
Exact <--RelatedTo--> Middle <--RelatedTo--> Knee <--RelatedTo--> Part <--RelatedTo--> Road 
Drawer <--AtLocation-- Shirt <--AtLocation-- Cotton <--RelatedTo--> Cloud <--RelatedTo--> Pillow 