Machine Learning Weka Question

Please use weka and the in built file weather.nominal.arff to answer this question.

What is the accuracy of the following rule for the windy attribute?

1.If windy then don't play.

2.else than play

Viewer hot Relation: weather.symbolic No. 1: outlook 2: temperature 3: humidity 4: windy 5: play Nominal Nominal Nominal Nominal Nominal 1 sunny high FALSE no 2 sunny hot high TRUE no 3 overcast hot high FALSE yes 4 rainy mild high FALSE yes 5 rainy cool normal FALSE yes 6 rainy cool normal TRUE no 7 overcast cool normal TRUE yes 8 sunny mild high FALSE no 9 sunny cool normal FALSE yes 10 rainy mild normal FALSE yes mild normal TRUE yes 12 overcast mild high TRUE yes 13 overcast hot normal FALSE yes 14 rainy mild high TRUE no 11 sunny