Shadows may become part of facial features.Logical formLearned from2 sentences. A facial expression can be naturalistic.Logical formLearned from2 sentences. A (contact area) can be facial.Logical formLearned from2 sentences. Orientations can be facial.Logical formLearned from2 sentences. An embodiment can be facial.Logical formLearned from2 sentences. Facial expressions can be over a meal.Logical formLearned from2 sentences. Properties can be facial.Logical formLearned from2 sentences. Facial expressions may undergo a synthesis.Logical formLearned from2 sentences. A tracking can be facial.Logical formLearned from2 sentences. Countenances can be facial.Logical formLearned from2 sentences. (Control parameters) can be facial.Logical formLearned from2 sentences. A system may locate facial features.Logical formLearned from2 sentences. A (feature finding) can be facial.Logical formLearned from2 sentences. A force may pertain-to facial expressions.Logical formLearned from2 sentences. Helmets may protect against facial injury.Logical formLearned from2 sentences.