Opportunity is a type of Possibility. Opportunity is related to Job. Job is related to Review. 
Change is related to Direction. West is a type of Direction. West is related to Coast. Coast is related to Formation. 
Possibility <--IsA-- Opportunity <--RelatedTo--> Job <--RelatedTo--> Review 
Change <--RelatedTo--> Direction <--IsA-- West <--RelatedTo--> Coast <--RelatedTo--> Formation 