eq { diff { hop { filter_eq { all_rows ; city of license ; norton , virginia } ; frequency mhz } ; hop { filter_eq { all_rows ; city of license ; pound , virginia } ; frequency mhz } } ; 0.4 } = true
select the rows whose city of license record fuzzily matches to norton , virginia . take the frequency mhz record of this row . select the rows whose city of license record fuzzily matches to pound , virginia . take the frequency mhz record of this row . the first record is 0.4 larger than the second record .