Leading is related to Captain. Captain is related to Man. Man is the opposite of Nature. 
Achievement is derived from Achieve. Achievement is related to Gain. Gain is the opposite of Lost. Lost is related to Reward. 
Leading <--RelatedTo--> Captain <--RelatedTo--> Man <--Antonym--> Nature 
Achieve <--DerivedFrom-- Achievement <--RelatedTo--> Gain <--Antonym--> Lost <--RelatedTo--> Reward 