A virus may destroy a human population.Logical formLearned from18 sentences. A laptop may get a virus.Logical formLearned from18 sentences. A need can be for (virus protection).Logical formLearned from18 sentences. Threat can be from a virus.Logical formLearned from18 sentences. A person may download a virus.Logical formLearned from18 sentences. A person may be protected against viruses.Logical formLearned from18 sentences. A male can be immune to a virus.Logical formLearned from18 sentences. A virus may spread in a US-city.Logical formLearned from18 sentences. A size may pertain-to a virus.Logical formLearned from18 sentences. An epidemic can be constituted-of-or-filled-with virus.Logical formLearned from18 sentences. Viruses may carry on business.Logical formLearned from18 sentences. (Sponsor regions) can be in relation to viruses.Logical formLearned from18 sentences. Relation can be to viruses.Logical formLearned from18 sentences. Viruses can be answerable to man.Logical formLearned from18 sentences. (Filterable virus) can be for a heredity.Logical formLearned from18 sentences.