greater { hop { filter_eq { all_rows ; satellite ; echo 2 } ; mass ( kg ) } ; hop { filter_eq { all_rows ; satellite ; mylar balloon } ; mass ( kg ) } } = true
select the rows whose satellite record fuzzily matches to echo 2 . take the mass  kg  record of this row . select the rows whose satellite record fuzzily matches to mylar balloon . take the mass  kg  record of this row . the first record is greater than the second record .