Imagine is a synonym of Judge. you would Judge because Dismiss. Dismiss is a synonym of Drop. Drop is related to Roll. 
Pistol can be Dangerous. War can be Dangerous. War is related to Costly. 
Imagine <--Synonym--> Judge --MotivatedByGoal--> Dismiss <--Synonym--> Drop <--RelatedTo--> Roll 
Pistol --HasProperty--> Dangerous <--HasProperty-- War <--RelatedTo--> Costly 