rank name height floors year notes
rank
name
height
floors
year
notes
number
first second first_number second_number
number
number
number text unitnum(unitnum) number number text
1 zions bank building
zions bank building in downtown boise, idaho 323 ft (98 m) 20 2013 tallest building in state since 2013
how many floors does the tallest building have ?
WRB JJ NNS VBD-AUX DT JJS NN VBD-AUX .
20
select c4 from w order by c4_number desc limit 1