Town is related to Small. Needle can be Small. 
Human is related to Lung. Lung is related to Body. Body is related to Doctor. you are likely to find Needle in/at/on Doctor. 
Town <--RelatedTo--> Small <--HasProperty-- Needle 
Human <--RelatedTo--> Lung <--RelatedTo--> Body <--RelatedTo--> Doctor <--AtLocation-- Needle 