rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 france 28 28 24 80
how many nations won at least 10 medals ?
WRB JJ NNS VBD IN JJS CD NNS .
8
select count ( c2 ) from w where c6_number >= 10