Sea is related to Vast. Vast is related to Empire. Empire is related to Strike. Strike is a type of Touch. 
History is related to People. Blind is a type of People. Blind is related to Disability. 
Sea <--RelatedTo--> Vast <--RelatedTo--> Empire <--RelatedTo--> Strike --IsA--> Touch 
History <--RelatedTo--> People <--IsA-- Blind <--RelatedTo--> Disability 