Is the dew point high in grandparents house . 
[IN:UNSUPPORTED_WEATHER Is the [SL:WEATHER_ATTRIBUTE dew point ] high in [SL:LOCATION [IN:UNSUPPORTED_PEOPLE grandparents house ] ] .  ]
[IN:UNSUPPORTED_WEATHER Is the [SL:WEATHER_ATTRIBUTE dew point ] high in [SL:LOCATION [IN:UNSUPPORTED_PEOPLE grandparents house ] ] .  ]