A flu can be cold.Logical formLearned from45 sentences. Cases can be constituted-of-or-filled-with avian flu.Logical formLearned from45 sentences. A person can be with flu.Logical formLearned from45 sentences. A (bird flu) may kill some persons.Logical formLearned from45 sentences. A cases may pertain-to a flu.Logical formLearned from44 sentences. (Flu season) may approach.Logical formLearned from44 sentences. An epidemic can be constituted-of-or-filled-with (bird flu).Logical formLearned from44 sentences. (Flu vaccine) may undergo a production.Logical formLearned from44 sentences. Some strains can be constituted-of-or-filled-with flu.Logical formLearned from44 sentences. A flu can be pandemic.Logical formLearned from44 sentences. An end may pertain-to a (flu season).Logical formLearned from44 sentences. A form may pertain-to a (bird flu virus).Logical formLearned from44 sentences. A case may pertain-to a (bird flu).Logical formLearned from44 sentences. A (flu virus) can be in an international-political-entity.Logical formLearned from43 sentences. Outbreaks may pertain-to a flu.Logical formLearned from43 sentences.