and { only { filter_eq { all_rows ; group position ; 2nd } } ; eq { hop { filter_eq { all_rows ; group position ; 2nd } ; date } ; 18 september 2002 } } = true
select the rows whose group position record fuzzily matches to 2nd . there is only one such row in the table . the date record of this unqiue row is 18 september 2002 .