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 great britain (gbr) 6 3 2 11
how many medals were won by the top three teams ?
WRB JJ NNS VBD-AUX VBN IN DT JJ CD NNS .
17
select sum ( c6 ) from w where c1_number <= 3