less { hop { filter_eq { all_rows ; vacator ; william f norrell ( d ) } ; reason for change } ; hop { filter_eq { all_rows ; vacator ; walter m mumma ( r ) } ; reason for change } } = true
select the rows whose vacator record fuzzily matches to william f norrell  d  . take the reason for change record of this row . select the rows whose vacator record fuzzily matches to walter m mumma  r  . take the reason for change record of this row . the first record is less than the second record .