eq { diff { hop { filter_eq { all_rows ; ballpark ; seals stadium } ; opened } ; hop { filter_eq { all_rows ; ballpark ; memorial stadium } ; opened } } ; -19 } = true
select the rows whose ballpark record fuzzily matches to seals stadium . take the opened record of this row . select the rows whose ballpark record fuzzily matches to memorial stadium . take the opened record of this row . the second record is 19 larger than the first record .