Extraordinary is related to Superior. Superior is similar to Upper. Quarter is part of Upper. 
Retain is a synonym of Hold. Hold is related to Grab. Grab is related to Get. 
Extraordinary <--RelatedTo--> Superior <--SimilarTo--> Upper <--PartOf-- Quarter 
Retain <--Synonym--> Hold <--RelatedTo--> Grab <--RelatedTo--> Get 