A woman may die from a strain of (bird flu).Logical formLearned from18 sentences. A (bird flu toll) may pertain-to a country.Logical formLearned from18 sentences. Access can be to a (bird flu vaccine).Logical formLearned from18 sentences. A (bird flu chief) may pertain-to an international-political-entity.Logical formLearned from18 sentences. Some (bird flu outbreaks) can be in poultry.Logical formLearned from18 sentences. A flu can be in a world-city.Logical formLearned from18 sentences. A male can be ill with a flu.Logical formLearned from18 sentences. A response can be to flu.Logical formLearned from18 sentences. Humans may be infected with (bird flu).Logical formLearned from18 sentences. A (bird flu virus) may spread.Logical formLearned from18 sentences. (Bird flu) may take hold.Logical formLearned from18 sentences. Outbreaks may pertain-to a (bird flu virus).Logical formLearned from18 sentences. A percent may pertain-to (flu cases).Logical formLearned from17 sentences. A person may die of a flu.Logical formLearned from17 sentences. A flu may undergo deaths.Logical formLearned from17 sentences.