a poisonous animal is dangerous
explosive is dangerous_thing. venomous_animal is animal. venomous_snake is not venomous_animal. toad is not venomous_animal. poisonous_gas is toxic_substance. venomous_animal is not animal. poisonous_gas is not toxic_substance. animal_cruelty is not harmed. animal_cruelty is harmed. explosive is not dangerous_thing.