A helmet may narrow a field of vision.Logical formLearned from4 sentences. A coronary artery may narrow at some places.Logical formLearned from4 sentences. Prices may narrow gains.Logical formLearned from4 sentences. A deal may be aimed at narrowing a gap.Logical formLearned from4 sentences. Voters may narrow a field.Logical formLearned from4 sentences. Support may narrow.Logical formLearned from4 sentences. A tower may narrow.Logical formLearned from4 sentences. A female may narrow a gap on an opponent.Logical formLearned from4 sentences. A president may narrow a lead.Logical formLearned from4 sentences. Negotiators may narrow differences.Logical formLearned from4 sentences. An opportunity may narrow.Logical formLearned from4 sentences. A gap may narrow by some (percentage points).Logical formLearned from4 sentences. Some differences may narrow.Logical formLearned from4 sentences. An (election race) may narrow to a finish.Logical formLearned from4 sentences. A dollar may narrow a (trade deficit).Logical formLearned from4 sentences.