A mixture can be constituted-of-or-filled-with (flu viruses).Logical formLearned from11 sentences. (H5n1 viruses) may undergo spreadings.Logical formLearned from11 sentences. Viruses may affect humans.Logical formLearned from11 sentences. A role can be in a spread of a virus.Logical formLearned from11 sentences. Some chickens may be infected with a virus.Logical formLearned from11 sentences. A (virus disease) can be infectious.Logical formLearned from11 sentences. A virus may have a (fatality rate).Logical formLearned from11 sentences. Persons may discover a virus.Logical formLearned from11 sentences. Information can be about a virus.Logical formLearned from11 sentences. A male may acquire a virus.Logical formLearned from11 sentences. A virus may reach a brain.Logical formLearned from11 sentences. A prospect may pertain-to a virus.Logical formLearned from11 sentences. A virus may cause a disease.Logical formLearned from11 sentences. Infection can be with (hepatitis c virus).Logical formLearned from11 sentences. Viruses can be spherical.Logical formLearned from11 sentences.