Pointers can be positive.Logical formLearned from10 sentences. Some runners may test positive.Logical formLearned from10 sentences. A (world champion) may test positive.Logical formLearned from10 sentences. A (drug test) may come positive.Logical formLearned from10 sentences. A dog may test positive.Logical formLearned from10 sentences. A requirement can be for positive (train control).Logical formLearned from10 sentences. (Shock effects) can be positive.Logical formLearned from10 sentences. Favorite may test positive.Logical formLearned from10 sentences. Rider may test positive for testosterone.Logical formLearned from10 sentences. Net income can be positive.Logical formLearned from10 sentences. An i.d. can be positive.Logical formLearned from10 sentences. (Market fundamentals) can be positive.Logical formLearned from10 sentences. A (holstein cow) may test positive for bovine (spongiform encephalopathy).Logical formLearned from10 sentences. A positive test may occur.Logical formLearned from10 sentences. Some planes may test positive.Logical formLearned from10 sentences.