speed [km/h (mph)] train type location date comments
speed -lsb- km\\/h -lrb- mph -rrb- -rsb-
train
type
location
date
comments
first second first_number second_number
number parsed year month day
number(number) text text text date text
504 (313.2) ml-500 maglev miyazaki maglev test track 12 december 1979 three-car train set
what is the difference in speed number of the fastest and slowest trains in km/h ?
WP VBD-AUX DT NN IN NN NN IN DT JJS CC JJS NNS IN NN .
197.6
select max ( c1_first_number ) - min ( c1_first_number ) from w