rank name nationality time notes
rank
name
nationality
time
notes
number
number min sec
number text text time text
1 dyana calub australia 1:01.77 q
how many swimmers were there from the united states in the top five in the semifinals ?
WRB JJ NNS VBD-AUX EX IN DT NNP NNPS IN DT JJ CD IN DT NNS .
3
select count ( c2 ) from w where c3 = 'united states' and c1_number <= 5