rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
first second
number
number
number
number
text text(text) number number number number
1 great britain (gbr) 2 1 2 5
how many countries won at least 1 gold and 1 silver medal ?
WRB JJ NNS VBD IN JJS CD NN CC CD NN NN .
5
select count ( c2 ) from w where c3_number >= 1 and c4_number >= 1