Leading is related to Advantage. Advantage is related to Gain. 
Write entails/necessarily involves Spell. Write is the opposite of Load. Load is related to Bread. Bread is related to Slide. 
Leading <--RelatedTo--> Advantage <--RelatedTo--> Gain 
Spell <--Entails-- Write <--Antonym--> Load <--RelatedTo--> Bread <--RelatedTo--> Slide 