A person may hear a smile.Logical formLearned from123 sentences. A flicker of a smile may widen a fraction.Logical formLearned from122 sentences. A smile may pertain-to persons.Logical formLearned from122 sentences. A smile may crease a face.Logical formLearned from121 sentences. A smile may appear on lips.Logical formLearned from121 sentences. A smile can be appreciative.Logical formLearned from121 sentences. A female may flash a male a smile.Logical formLearned from121 sentences. A smile can be bright.Logical formLearned from120 sentences. A smile can be flirtatious.Logical formLearned from120 sentences. A person may return a smile.Logical formLearned from119 sentences. A smile may pertain-to a man.Logical formLearned from118 sentences. Smiles can be genuine.Logical formLearned from118 sentences. Smiles can be rare.Logical formLearned from117 sentences. A smile can be contagious.Logical formLearned from116 sentences. A smile can be timid.Logical formLearned from116 sentences.