and { only { filter_eq { filter_eq { all_rows ; draws ; 4 } ; conceded ; 6 } } ; eq { hop { filter_eq { filter_eq { all_rows ; draws ; 4 } ; conceded ; 6 } ; team } ; olimpia } } = true
select the rows whose draws record is equal to 4 . among these rows , select the rows whose conceded record is equal to 6 . there is only one such row in the table . the team record of this unqiue row is olimpia .