and { only { filter_eq { all_rows ; current affiliation ; nbc affiliate owned by gannett company } } ; eq { hop { filter_eq { all_rows ; current affiliation ; nbc affiliate owned by gannett company } ; station } ; kyw - tv ( now wkyc - tv ) } } = true
select the rows whose current affiliation record fuzzily matches to nbc affiliate owned by gannett company . there is only one such row in the table . the station record of this unqiue row is kyw  tv  now wkyc  tv  .