Encounter is a type of Magazine. Encounter is related to Find. Find is related to Distinguish. Characterize is a type of Distinguish. 
Bitter is the opposite of Optimistic. People can be Optimistic. People wants (to) Bicycle. 
Magazine <--IsA-- Encounter <--RelatedTo--> Find <--RelatedTo--> Distinguish <--IsA-- Characterize 
Bitter <--Antonym--> Optimistic <--HasProperty-- People --Desires--> Bicycle 