A tornado may destroy some homes.Logical formLearned from29 sentences. A center may pertain-to a tornado.Logical formLearned from29 sentences. (Tornado warnings) may be issued.Logical formLearned from29 sentences. A tornado may destroy some homes.Logical formLearned from28 sentences. Persons may have a (tornado warning).Logical formLearned from28 sentences. A tornado can be in a US-city.Logical formLearned from28 sentences. A storm may spawn a tornado.Logical formLearned from27 sentences. A (tornado outbreak) can be in history.Logical formLearned from27 sentences. A (tornado outbreak) can be deadly.Logical formLearned from26 sentences. A tornado can be oncoming.Logical formLearned from26 sentences. A weather-service may issue a (tornado watch).Logical formLearned from26 sentences. Some persons may be killed by a tornado.Logical formLearned from26 sentences. A path may pertain-to a tornado.Logical formLearned from26 sentences. A tornado may strike an area.Logical formLearned from25 sentences. A tornado may approach.Logical formLearned from25 sentences.