Bullet is related to Silver. Silver is related to Buddy. Buddy is a different concept from Girlfriend. Girlfriend is a different concept from Enemy. 
Study requires Concentrate. you are likely to find Poet in/at/on Study. you are likely to find Poet in/at/on Garden. you are likely to find Row in/at/on Garden. 
Bullet <--RelatedTo--> Silver <--RelatedTo--> Buddy <--DistinctFrom--> Girlfriend <--DistinctFrom--> Enemy 
Concentrate <--HasPrerequisite-- Study <--AtLocation-- Poet --AtLocation--> Garden <--AtLocation-- Row 