A strength may pertain-to a tornado.Logical formLearned from10 sentences. A butterfly may cause a tornado.Logical formLearned from10 sentences. A (weather service) may issue a (tornado warning).Logical formLearned from10 sentences. A (death toll) can be in a tornado.Logical formLearned from10 sentences. A (killer tornado) may pertain-to week.Logical formLearned from10 sentences. A tornado can be part of a weekend of violent storms.Logical formLearned from10 sentences. A tornado can be during a hurricane.Logical formLearned from10 sentences. A tornado may be flattened.Logical formLearned from10 sentences. A tornado may be swept through a community.Logical formLearned from10 sentences. A tornado may snap some (telephone lines).Logical formLearned from10 sentences. A tornado may take place.Logical formLearned from9 sentences. A tornado may intensify.Logical formLearned from9 sentences. A version may pertain-to a tornado.Logical formLearned from9 sentences. A male may see a tornado.Logical formLearned from9 sentences. Damages can be from a tornado.Logical formLearned from9 sentences.