Positive attitudes can be toward mathematics.Logical formLearned from15 sentences. Impressions can be positive.Logical formLearned from15 sentences. Traces can be positive.Logical formLearned from15 sentences. A (user feedback) can be positive.Logical formLearned from15 sentences. A delta can be positive.Logical formLearned from15 sentences. A ranking can be positive.Logical formLearned from15 sentences. A threshold can be positive.Logical formLearned from15 sentences. Social relations can be positive.Logical formLearned from15 sentences. A rejection can be positive.Logical formLearned from15 sentences. (Drug results) can be positive.Logical formLearned from15 sentences. A sample may prove positive.Logical formLearned from15 sentences. Some persons may test positive for a virus.Logical formLearned from15 sentences. A male may test positive for a (blood transfusion).Logical formLearned from15 sentences. A (wealth effect) can be positive.Logical formLearned from15 sentences. Medicine may cause a positive result.Logical formLearned from15 sentences.