what time should I take the metro to the beach if I want to meet my friends at 4pm?
[IN:GET_ESTIMATED_DEPARTURE what time should I take the [SL:METHOD_TRAVEL metro ] to [SL:DESTINATION [IN:GET_LOCATION [SL:CATEGORY_LOCATION the beach ] ] ] if I want to meet my friends [SL:DATE_TIME_ARRIVAL at 4 pm ] ? ]