A flu can be mysterious.Logical formLearned from22 sentences. (Bird flu) may undergo a treatment.Logical formLearned from22 sentences. Human deaths can be from (bird flu).Logical formLearned from22 sentences. A cure can be for a flu.Logical formLearned from22 sentences. A flu may strike.Logical formLearned from22 sentences. A flu can be dangerous.Logical formLearned from22 sentences. A flu may pertain-to a continent.Logical formLearned from22 sentences. Flu may be suspected.Logical formLearned from22 sentences. A spike can be in (flu cases).Logical formLearned from22 sentences. A (flu outbreak) can be seasonal.Logical formLearned from22 sentences. A (bird flu fatality) may pertain-to a country.Logical formLearned from22 sentences. (Bird flu) can be with some human deaths.Logical formLearned from22 sentences. A (bird flu virus strain) can be deadly.Logical formLearned from22 sentences. A (flu pandemic) can be inevitable.Logical formLearned from22 sentences. A male may have a (stomach flu).Logical formLearned from22 sentences.