base can effect field to sunny by physical limestone
partly_cloudy_location is cloudy_area. cloudy_area is natural_thing. snow is crystalline_form_of_solid_water. limestone is sedimentary_rock. chalk is limestone. base is land_topographical_feature. grounds is sediment. sunlight has effect_of_heating_earth high_ground is natural_elevation. snow is form_of_crystalline_water.