A tornado may occur.Logical formLearned from22 sentences. A tornado may pertain-to a day.Logical formLearned from22 sentences. A series can be constituted-of-or-filled-with (tornado outbreaks).Logical formLearned from22 sentences. A tornado may touch_down in a US-city.Logical formLearned from22 sentences. A tornado may hit an area.Logical formLearned from22 sentences. A (lead time) can be for (tornado warnings).Logical formLearned from22 sentences. A weather-service may issue (tornado warnings).Logical formLearned from22 sentences. A base of a tornado may include a museum.Logical formLearned from22 sentences. An area may surround a tornado.Logical formLearned from22 sentences. A tornado may be ravaged.Logical formLearned from22 sentences. An eye may pertain-to a tornado.Logical formLearned from21 sentences. A (tornado outbreak) may pertain-to a US-city.Logical formLearned from21 sentences. A tornado may pertain-to persons.Logical formLearned from21 sentences. A tornado can be over water.Logical formLearned from21 sentences. A person can be through a tornado.Logical formLearned from21 sentences.