rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 algeria 8 3 0 11
what is the difference in gold between algeria and cameroon ?
WP VBD-AUX DT NN IN NN IN NNP CC NNP .
7
select ( select c3_number from w where c2 = 'algeria' ) - ( select c3_number from w where c2 = 'cameroon' )