Cover is the opposite of Opening. Opening is similar to Starting. Starting is related to Declare. 
Inflation is a type of Finance. Inflation is a synonym of Increase. Increase is the opposite of Lower. 
Cover <--Antonym--> Opening <--SimilarTo--> Starting <--RelatedTo--> Declare 
Finance <--IsA-- Inflation <--Synonym--> Increase <--Antonym--> Lower 