Raining will be Grandma Mary
[IN:GET_WEATHER Raining ] will be [SL:WEATHER_ATTRIBUTE [SL:LOCATION [IN:UNSUPPORTED_PEOPLE Grandma ] [SL:TYPE_RELATION Mary ] ] ] ] ]
[IN:GET_WEATHER Raining ] will be [SL:WEATHER_ATTRIBUTE [SL:LOCATION [IN:UNSUPPORTED_PEOPLE Grandma ] [SL:TYPE_RELATION Mary ] ] ] ] ]