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 gold medals did puerto rico earn ?
WRB JJ JJ NNS VBD-AUX NNP NNP VB .
0
select c3_number from w where c2_first = 'puerto rico'