How long will it take to get to Mary's house from my house if I leave now?
[IN:GET_ESTIMATED_DURATION How long will it take to get to [SL:DESTINATION [IN:GET_LOCATION_HOME [SL:CONTACT Mary ] 's house ] ] from [SL:SOURCE [IN:GET_LOCATION_HOME [SL:CONTACT my ] house ] ] if I leave [SL:DATE_TIME_DEPARTURE now ] ? ]