sentences: a simple is made of one or more raindrops chemically combined
docs: murexide is chemical_compound. raindrop is fresh_water_particle. simple_chemical_decomposition is chemical_decomposition. dihydropyridine is chemical_compound. teardrop is natural_inanimate_thing. raindrop is drop. raindrop is droplet_of_water. raindrop is rainwater. dewdrop is particle.