Investment is a type of Promotion. Promotion is part of Marketing. Marketing is related to Profit. Profit is the opposite of Cash. 
Hall is related to Mayor. Mayor is related to Capital. Capital is a synonym of Cap. 
Investment --IsA--> Promotion --PartOf--> Marketing <--RelatedTo--> Profit <--Antonym--> Cash 
Hall <--RelatedTo--> Mayor <--RelatedTo--> Capital <--Synonym--> Cap 