and { eq { diff { hop { filter_eq { all_rows ; winner ; thomas wassberg } ; fis nordic world ski championships } ; hop { filter_eq { all_rows ; winner ; gunde svan } ; fis nordic world ski championships } } ; -9 } ; and { eq { hop { filter_eq { all_rows ; winner ; thomas wassberg } ; fis nordic world ski championships } ; 1980 } ; eq { hop { filter_eq { all_rows ; winner ; gunde svan } ; fis nordic world ski championships } ; 1989 } } } = true
select the rows whose winner record fuzzily matches to thomas wassberg . take the fis nordic world ski championships record of this row . select the rows whose winner record fuzzily matches to gunde svan . take the fis nordic world ski championships record of this row . the second record is 9 larger than the first record . the fis nordic world ski championships record of the first row is 1980 . the fis nordic world ski championships record of the second row is 1989 .