identify the root of the decision trees by showing all calculation

Outlook Temperature Humidity Windy sunny 85 185 false sunny 80 190 true overcast 83 78 false Train 70 196 false Irain 168 180 false rain 165 70 true overcast 164 165 true sunny 72 95 false sunny 69 70 false rain 75 180 false sunny 75 70 true overcast 72 190 true overcast 81 75 false Irain 71 180 true Play (positive) / Don't Play (negative) Don't Play Don't Play Play Play Play Don't Play Play Don't Play Play Play Play Play Play Don't Play