sentences: as the amount of organic matter in soil increases , the soil will be better for the growth of plants
docs: cellular_growth_factor is organic_matter. plant_material is organic_matter. potting_soil is soil_product. organic is fertilizer. agricultural_product is organic_matter. plant_product is organic_matter. potpourri is organic_matter. ingrowth is growth. wood is organic_plant_matter. soil_product is soil.