sentences: chemical weathering means rocks weathering because of chemical reactions
docs: weathering is becoming. camp_degradation is chemical_reaction. chemical_reaction_intentional is physical_destruction_event. chemical_decomposition_of_camp is chemical_decomposition. camp_production is chemical_reaction. phosphate_weathering is erosion. weathering is physical_event. snowing is precipitation_process. carbon_fixation is chemical_reaction. chemical_decomposition_of_camp is chemical_reaction.