rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
first second
number
number
number
number
number text(text) number number number number
1 united states (usa) 5 0 0 5
how many nations are ranked 9th ?
WRB JJ NNS VBD-AUX VBN JJ .
4
select count ( c2 ) from w where c1_number = 9