rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
first second
number
number
number
number
number text(text) number number number number
1 united states (usa) 25 16 7 48
how many teams scored the same amount of gold medals as mexico ?
WRB JJ NNS VBD DT JJ NN IN NN NNS IN NNP .
8
select count ( c2 ) from w where c2_first != 'mexico' and c3_number = ( select c3_number from w where c2_first = 'mexico' )