What is the Humidity rate today in Boston? 
[IN:GET_WEATHER What is the [SL:WEATHER_ATTRIBUTE Humidity ] rate [SL:DATE_TIME today ] in [SL:LOCATION Boston ] ?  ]
[IN:GET_WEATHER What is the [SL:WEATHER_ATTRIBUTE Humidity ] rate [SL:DATE_TIME today ] in [SL:LOCATION Boston ] ?  ]