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
51st position and 31st position were both obtained by this runner at which competition ?
JJ NN CC JJ NN VBD-AUX DT VBN IN DT NN IN WDT NN .
Olympic Games
select c2 from w where c4_number = 51