pos. time athlete country venue date
pos .
time
athlete
country
venue
date
number
first second first_number second_number
number parsed year month day
number number(number) text text text date
1 12.21 (+0.7) yordanka donkova bulgaria stara zagora 20 august 1988
how many of the athletes came from the united states ?
WRB JJ IN DT NNS VBD IN DT NNP NNPS .
10
Keyword Keyword Keyword Column Keyword Keyword Keyword Keyword Column Keyword Literal.String
select count ( c3 ) from w where c4 = 'united states'
Keyword Keyword None None Column Column Column None Literal Literal None
['agg', 'agg_count'] ['agg', 'agg_count'] c3 c4 c4