and { only { filter_less { all_rows ; polyunsaturated fat ; 10 % } } ; eq { hop { filter_less { all_rows ; polyunsaturated fat ; 10 % } ; } ; suet } } = true
select the rows whose polyunsaturated fat record is less than 10  . there is only one such row in the table . the record of this unqiue row is suet .