Fighting can be Dangerous. Dangerous is similar to Desperate. Desperate is similar to Brave. Brave is related to Courage. 
Tool is related to Fire. Fire is related to Radiation. 
Fighting --HasProperty--> Dangerous <--SimilarTo--> Desperate <--SimilarTo--> Brave <--RelatedTo--> Courage 
Tool <--RelatedTo--> Fire <--RelatedTo--> Radiation 