A letter may test positive for anthrax.Logical formLearned from39 sentences. Humor can be positive.Logical formLearned from39 sentences. Encounters can be positive.Logical formLearned from39 sentences. An economy can be positive.Logical formLearned from39 sentences. Fruits can be positive.Logical formLearned from38 sentences. Some persons may be tested positive.Logical formLearned from38 sentences. Reception of an album can be positive.Logical formLearned from38 sentences. Holes can be positive.Logical formLearned from38 sentences. A programme can be positive.Logical formLearned from38 sentences. (Adult role models) can be positive.Logical formLearned from38 sentences. (Reinforcement techniques) can be positive.Logical formLearned from38 sentences. A degree can be positive.Logical formLearned from38 sentences. A loop can be positive.Logical formLearned from38 sentences. Days can be positive.Logical formLearned from38 sentences. A touch can be positive.Logical formLearned from38 sentences.