Persons can be viable.Logical formLearned from85 sentences. Terms can be viable.Logical formLearned from83 sentences. A site can be viable.Logical formLearned from82 sentences. A (treatment option) can be viable.Logical formLearned from81 sentences. A response can be viable.Logical formLearned from81 sentences. Methods can be viable.Logical formLearned from81 sentences. A competition can be viable.Logical formLearned from80 sentences. A location can be viable.Logical formLearned from79 sentences. A proposal can be viable.Logical formLearned from78 sentences. Means can be viable.Logical formLearned from76 sentences. Bacteria can be viable.Logical formLearned from75 sentences. Microorganisms can be viable.Logical formLearned from75 sentences. A chance can be viable.Logical formLearned from75 sentences. A system can be viable.Logical formLearned from74 sentences. A vehicle can be viable.Logical formLearned from73 sentences.