rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 russia 3 0 2 5
how many countries had at least 2 total medals ?
WRB JJ NNS VBD-AUX IN JJS CD JJ NNS .
2
select count ( c2 ) from w where c6_number >= 2