less { hop { filter_eq { all_rows ; event ; 10000 m } ; position } ; hop { filter_eq { all_rows ; event ; 5000 m } ; position } } = true
select the rows whose event record fuzzily matches to 10000 m . take the position record of this row . select the rows whose event record fuzzily matches to 5000 m . take the position record of this row . the first record is less than the second record .