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
1982 african championships cairo, egypt 1st marathon 2:21:05
in what year did the runner participate in the most marathons ?
IN WDT NN VBD-AUX DT NN VB IN DT RBS NNS .
1984
select c1 from w group by c1 order by count ( * ) desc limit 1