A linkage can be positive.Logical formLearned from23 sentences. A mandate can be positive.Logical formLearned from23 sentences. A (train control system) can be positive.Logical formLearned from23 sentences. Side-effects can be positive.Logical formLearned from23 sentences. A quote can be positive.Logical formLearned from23 sentences. A person may have some positive feedback.Logical formLearned from23 sentences. Pcps can be positive.Logical formLearned from23 sentences. (Belief systems) can be positive.Logical formLearned from23 sentences. A prediction can be positive.Logical formLearned from23 sentences. Public opinion can be positive.Logical formLearned from23 sentences. An occurrence can be positive.Logical formLearned from23 sentences. Notions can be positive.Logical formLearned from23 sentences. A (growth trend) can be positive.Logical formLearned from23 sentences. Some positive tests may involve some athletes.Logical formLearned from23 sentences. A positive test may be revealed.Logical formLearned from23 sentences.