Infrastructure is a type of Store. you are likely to find Carpet in/at/on Store. you are likely to find Ash in/at/on Carpet. Ash is related to Soap. 
Answer is a synonym of Appear. Appear is a synonym of Offer. Offer is related to Limited. Limited is a synonym of Special. 
Infrastructure --IsA--> Store <--AtLocation-- Carpet <--AtLocation-- Ash <--RelatedTo--> Soap 
Answer <--Synonym--> Appear <--Synonym--> Offer <--RelatedTo--> Limited <--Synonym--> Special 