sandy soil is a type of soil
sandy_desert is not sandy_soil_region. sandy_soil_region is coarse_grained_soil_region. desert_soil is soil. desert_soil is not soil. sandy_soil_region is not coarse_grained_soil_region. sandy_beach is sandy_soil_region. clay_soil is soil. sand is soil. sandy_desert is sandy_soil_region. dirt is soil.