Root is related to Plant. Plant is a synonym of Works. Works is related to Design. 
Enemy is related to Bad. Killing can be Bad. Killing can cause/lead to Arrest. Arrest is the opposite of Rescue. 
Root <--RelatedTo--> Plant <--Synonym--> Works <--RelatedTo--> Design 
Enemy <--RelatedTo--> Bad <--HasProperty-- Killing --Causes--> Arrest <--Antonym--> Rescue 