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
what is the difference between the number of medals earned by the highest earning country and the lowest earning country ?
WP VBD-AUX DT NN IN DT NN IN NNS VBN IN DT JJS NN NN CC DT JJS NN NN .
4
select max ( c6_number ) - min ( c6_number ) from w