and { only { filter_eq { all_rows ; earpads ; circumaural bowl } } ; eq { hop { filter_eq { all_rows ; earpads ; circumaural bowl } ; headphone model } ; gs1000i } } = true
select the rows whose earpads record fuzzily matches to circumaural bowl . there is only one such row in the table . the headphone model record of this unqiue row is gs1000i .