Brush is a type of Touch. Touch is related to Poke. Pocket is derived from Poke. Pocket is related to Coat. 
Master is related to Authority. Authority is a type of Expert. you are likely to find Expert in/at/on Field. 
Brush --IsA--> Touch <--RelatedTo--> Poke <--DerivedFrom-- Pocket <--RelatedTo--> Coat 
Master <--RelatedTo--> Authority --IsA--> Expert --AtLocation--> Field 