eq { hop { nth_argmax { filter_eq { all_rows ; capital ; warsaw } ; area in 1000 km square ( 1930 ) ; 1 } ; voivodeship separate city } ; warszawskie } = true
select the rows whose capital record fuzzily matches to warsaw . select the row whose area in 1000 km square  1930  record of these rows is 1st maximum . the voivodeship separate city record of this row is warszawskie .