user_query: is it going to rain?
tree_str_mr: [__DG_YES__ [__ARG_TASK__ get_weather_attribute ] ] [__DG_INFORM__ [__ARG_TASK__ get_forecast ] [__ARG_CONDITION__ rain ] ]
response: [__DG_YES__ Yes ] , [__DG_INFORM__ the forecast calls for [__ARG_CONDITION__ rain ] ]
target: [__DG_YES__ Yes ] , [__DG_INFORM__ the forecast calls for [__ARG_CONDITION__ rain ] ]
references: [__DG_YES__ Yes ] , [__DG_INFORM__ the forecast calls for [__ARG_CONDITION__ rain ] ]