year competition venue position event notes
year
competition
venue
position
event
notes
number
address
number
number hour min sec
number text address rank text time
2001 beijing marathon beijing, pr china 7th marathon 2:10:46
how many marathons were held in beijing ?
WRB JJ NNS VBD-AUX VBN IN NNP .
3
select count ( c2 ) from w where c3_address = 'beijing'