rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 france 28 28 24 80
what is the difference between france 's and egypt 's silver medals ?
WP VBD-AUX DT NN IN NNP POS CC NNP POS NN NNS .
23
select ( select c4_number from w where c2 = 'france' ) - ( select c4_number from w where c2 = 'egypt' )