Image is a type of Document. Document is related to Letter. Letter is related to Device. Device is related to Speaker. 
Let is the opposite of Prevent. Defend is a type of Prevent. Defend is related to Guard. Guard is related to Football. 
Image --IsA--> Document <--RelatedTo--> Letter <--RelatedTo--> Device <--RelatedTo--> Speaker 
Let <--Antonym--> Prevent <--IsA-- Defend <--RelatedTo--> Guard <--RelatedTo--> Football 