Plant is related to Branch. Branch is a synonym of Arm. you are likely to find Nerve in/at/on Arm. 
Range is related to Farm. Farm is related to Plot. Scheme is a type of Plot. 
Plant <--RelatedTo--> Branch <--Synonym--> Arm <--AtLocation-- Nerve 
Range <--RelatedTo--> Farm <--RelatedTo--> Plot <--IsA-- Scheme 