sentences: a bacterium is a kind of decomposer
docs: bacterial_agent is bacterium. biological_decomposition is decomposing. bacteria is bacteria. thermophilic_bacterium is bacterium. polysaccharide_encapsulated_bacterium is bacterium. anaerobic_bacterium is bacterium. bacteria is microorganism. aerobic_bacterium is bacterium. decomposing is decomposition. fibrobacteres is bacterium.