Object is related to Metal. Metal is related to Tablespoon. Tablespoon is related to Measure. 
Document is related to Article. Article is related to Block. Block is a type of Area. 
Object <--RelatedTo--> Metal <--RelatedTo--> Tablespoon <--RelatedTo--> Measure 
Document <--RelatedTo--> Article <--RelatedTo--> Block --IsA--> Area 