Duty is similar to Fatigue. Fatigue is similar to Trouble. Trouble is related to Cold. Cold is related to Iron. 
you are likely to find Pilot in/at/on Shower. you are likely to find Pilot in/at/on Ground. you are likely to find Nut in/at/on Ground. Nut is related to Seed. 
Duty <--SimilarTo--> Fatigue <--SimilarTo--> Trouble <--RelatedTo--> Cold <--RelatedTo--> Iron 
Shower <--AtLocation-- Pilot --AtLocation--> Ground <--AtLocation-- Nut <--RelatedTo--> Seed 