rank heat name nationality time notes
rank
heat
name
nationality
time
notes
number
number
number
list length
number number text text time <c,text>
1 1 lacena golding-clarke jamaica 12.74 q, pb
how many athletes from jamaica are represented in the results ?
WRB JJ NNS IN NNP VBD-AUX VBN IN DT NNS .
3
select count ( c3 ) from w where c4 = 'jamaica'