Post is related to Lamp. Lamp is related to Sheep. Sheep is related to Dumb. Dumb is a different concept from Smart. 
String is a type of Remove. Shed is a type of Remove. Shed is related to Building. 
Post <--RelatedTo--> Lamp <--RelatedTo--> Sheep <--RelatedTo--> Dumb <--DistinctFrom--> Smart 
String --IsA--> Remove <--IsA-- Shed <--RelatedTo--> Building 