Butter is related to Roll. Roll is related to Movement. Movement is related to Come. 
Cat is related to Killer. Killer is related to Hunter. Hunter is related to Food. Food is related to Grain. 
Butter <--RelatedTo--> Roll <--RelatedTo--> Movement <--RelatedTo--> Come 
Cat <--RelatedTo--> Killer <--RelatedTo--> Hunter <--RelatedTo--> Food <--RelatedTo--> Grain 