greater { hop { filter_eq { all_rows ; yard name ; delta shipbuilding co } ; total vessels built for usmc } ; hop { filter_eq { all_rows ; yard name ; pennsylvania shipyards } ; total vessels built for usmc } } = true
select the rows whose yard name record fuzzily matches to delta shipbuilding co . take the total vessels built for usmc record of this row . select the rows whose yard name record fuzzily matches to pennsylvania shipyards . take the total vessels built for usmc record of this row . the first record is greater than the second record .