greater { hop { filter_eq { all_rows ; date ; july 16 } ; location / attendance } ; hop { filter_eq { all_rows ; date ; july 18 } ; location / attendance } } = true
select the rows whose date record fuzzily matches to july 16 . take the location  attendance record of this row . select the rows whose date record fuzzily matches to july 18 . take the location  attendance record of this row . the first record is greater than the second record .