A virus may have potential.Logical formLearned from60 sentences. A virus may spread in a country.Logical formLearned from59 sentences. A virus may pertain-to a forest.Logical formLearned from59 sentences. A virus can be in a world-city.Logical formLearned from59 sentences. Viruses can be virulent.Logical formLearned from59 sentences. A virus may pertain-to a world-city.Logical formLearned from59 sentences. A virus may undergo a reproduction.Logical formLearned from59 sentences. An avian (influenza virus) can be pathogenic.Logical formLearned from59 sentences. Resistance can be to a virus.Logical formLearned from59 sentences. A virus may take hold.Logical formLearned from59 sentences. A reservoir may pertain-to a virus.Logical formLearned from59 sentences. A virus may be transmitted to humans.Logical formLearned from59 sentences. A virus can be weird.Logical formLearned from59 sentences. An appearance may pertain-to a virus.Logical formLearned from59 sentences. A virus may disappear.Logical formLearned from59 sentences.