(Bird flu) may cause a death.Logical formLearned from14 sentences. A toll can be from (bird flu).Logical formLearned from14 sentences. A (bird flu strain) may kill some persons.Logical formLearned from14 sentences. Chicken may be infected with (bird flu).Logical formLearned from14 sentences. (Flu symptoms) may pertain-to a male.Logical formLearned from14 sentences. Fears may pertain-to a (bird flu).Logical formLearned from14 sentences. A vaccine can be for a flu.Logical formLearned from14 sentences. A flu may be pandemic_overed.Logical formLearned from14 sentences. A country may report a case of flu.Logical formLearned from14 sentences. (Flu control measures) can be strict.Logical formLearned from14 sentences. An epicenter may pertain-to a (flu epidemic).Logical formLearned from14 sentences. A (bird flu death toll) may pertain-to the world.Logical formLearned from14 sentences. A country may report cases of flu.Logical formLearned from14 sentences. Patients can be sick with flu.Logical formLearned from14 sentences. (Flu deaths) can be suspected.Logical formLearned from14 sentences.