Pass is a synonym of Better. Better is a synonym of Reform. Reform is a type of Improvement. 
Structural is related to Column. Column is a different concept from Record. Register is a type of Record. 
Pass <--Synonym--> Better <--Synonym--> Reform --IsA--> Improvement 
Structural <--RelatedTo--> Column <--DistinctFrom--> Record <--IsA-- Register 