rank swimmer country time note
rank
swimmer
country
time
note
number
number min sec
number text text time text
1 claudia poll costa rica 1:00.45 q
how many swimmers are from mexico ?
WRB JJ NNS VBD-AUX IN NNP .
2
Keyword Keyword Keyword Column Keyword Keyword Keyword Keyword Column Keyword Literal.String
select count ( c2 ) from w where c3 = 'mexico'
Keyword Keyword Column None Column Literal None
['agg', 'agg_count'] ['agg', 'agg_count'] c2 c3