Office is related to Bureau. Bureau is a synonym of Agency. Agency is related to Company. Acquire is a type of Company. 
Straw is related to Barn. Barn is related to Animal. 
Office <--RelatedTo--> Bureau <--Synonym--> Agency <--RelatedTo--> Company <--IsA-- Acquire 
Straw <--RelatedTo--> Barn <--RelatedTo--> Animal 