date winner yacht loser yacht score delta
date
winner
yacht
loser
yacht
score
delta
number parsed year month day
number number1 number2
number min sec
date text text text text score time
september 14, 1983 liberty us-40 australia ii ka-6 1-0 1:10
what was the score difference for the september 15th game ?
WP VBD-AUX DT NN NN IN DT NNP JJ NN .
2
select c6_number1 - c6_number2 from w where c1 = 'september 15, 1983'