How long will it take to get to the grocery if I walk from Mom's house?
[IN:GET_ESTIMATED_DURATION How long will it take to get to [SL:DESTINATION [IN:GET_LOCATION [SL:CATEGORY_LOCATION the grocery ] ] ] if I [SL:METHOD_TRAVEL walk ] from [SL:SOURCE [IN:GET_LOCATION_HOME [SL:TYPE_RELATION Mom ] 's house ] ] ? ]