year competition location event final-rank final-score qualifying rank qualifying score
year
competition
location
event
final rank
final score
qualifying rank
qualifying score
number
number
number
number
number
number text text text rank number number number
2008 2008 summer olympics beijing team 2 186.525 2 246.8
what was the difference between her qualifying scores for balance beam between boston and philadelphia ?
WP VBD-AUX DT NN IN PRP$ VBG NNS IN NN NN IN NNP CC NNP .
0.400
select abs ( ( select c8_number from w where c4 = 'balance beam' and c3 = 'boston' ) - ( select c8_number from w where c4 = 'balance beam' and c3 = 'philadelphia' ) )