pos no driver constructor laps time/retired grid
pos
no
driver
constructor
laps
time\\/retired
grid
number
number
number
number hour min sec
number
rank number text text number time number
1 12 clay regazzoni ferrari 60 1:01:25.34 3
how many drivers participated in the race ?
WRB JJ NNS VBD IN DT NN .
16
select count ( c3 ) from w