sentences: if an organism dies then the population of that organism will decrease
docs: dead_tree is dead_organism. dead_person is dead_organism. dead_vertebrate is dead_organism. dead_male_person is dead_organism. dead_living_organism is dead_organism. dead_insect is dead_organism. dead_bird is dead_organism. corpse is dead_organism. dead_organism is former_living_thing. dead_organism is former_agent.