Tomato is a type of Vegetable. Vegetable is related to Garlic. 
Runner is related to Bean. Bean is related to Broad. Broad is the opposite of Tight. Tighten is derived from Tight. 
Tomato --IsA--> Vegetable <--RelatedTo--> Garlic 
Runner <--RelatedTo--> Bean <--RelatedTo--> Broad <--Antonym--> Tight <--DerivedFrom-- Tighten 