rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 south korea 9 2 1 12
what was the total number of medals won by all the teams combined ?
WP VBD-AUX DT JJ NN IN NNS VBN IN PDT DT NNS VBN .
64
select sum ( c6_number ) from w