low good / poor / trouble sand has a low alphabet of digests
bottom_rot is plant_disease. knowledge is not good_nor_bad. knowledge is good_nor_bad. organic_silt_soil_region is low_plasticity_soil_region. bottom_rot_fungus is not fungus. sand is not very_small_rocks. sand is very_small_rocks. toothache is not ache. bottom_rot is not plant_disease.