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
which competition is listed the most in this chart ?
WDT NN VBD-AUX VBN DT RBS IN DT NN .
World Championships
select c2 from w group by c2 order by count ( * ) desc limit 1