rank nation gold silver bronze total
rank
nation
gold
silver
bronze
total
number
number
number
number
number
number text number number number number
1 brazil 9 0 0 9
how many medals overall did puerto rico win ?
WRB JJ NNS RB VBD-AUX NNP NNP VB .
1
select c6_number from w where c2 = 'puerto rico'