eq { diff { hop { filter_eq { all_rows ; venue ; punt road oval } ; crowd } ; hop { filter_eq { all_rows ; venue ; kardinia park } ; crowd } } ; -4000 } = true
select the rows whose venue record fuzzily matches to punt road oval . take the crowd record of this row . select the rows whose venue record fuzzily matches to kardinia park . take the crowd record of this row . the second record is 4000 larger than the first record .