sulfur cannot be decomposed into different substances by simple chemical methods
sulfur is not chemical_element. chemical_decomposition is not decomposing. one_of_chemical_elements is sulfur. sulfur is chemical_element. sulfurous_acid is not inorganic_substance. one_of_chemical_elements is not sulfur. sulfur is naturally_occurring_substance. sulfuric_acid is not toxic_substance. sulfide is not chemical_compound. sulfur is not naturally_occurring_substance.