How many rest areas are available from South of the Border to Columbia, SC
[IN:GET_INFO_ROUTE How many [SL:WAYPOINT [IN:GET_LOCATION [SL:CATEGORY_LOCATION rest areas ] ] ] are available from [SL:SOURCE [IN:GET_LOCATION [SL:POINT_ON_MAP South of the Border ] ] ] to [SL:DESTINATION Columbia , SC ] ]