Muscle may approximate facial expressions.Logical formLearned from2 sentences. (Control algorithms) can be facial.Logical formLearned from2 sentences. Meshes can be facial.Logical formLearned from2 sentences. A grand challenge can be in facial animation.Logical formLearned from2 sentences. An interrelationship may pertain-to facial features.Logical formLearned from2 sentences. Asymmetries can be in facial expression.Logical formLearned from2 sentences. A layer may pertain-to a facial tissue.Logical formLearned from2 sentences. A polygonal mesh may form a layer of a model of facial tissue.Logical formLearned from2 sentences. A luminance can be facial.Logical formLearned from2 sentences. (Expression ratings) can be facial.Logical formLearned from2 sentences. An eye can be facial.Logical formLearned from2 sentences. (Measurement systems) can be facial.Logical formLearned from2 sentences. Bands can be facial.Logical formLearned from2 sentences. (Skin sensations) can be facial.Logical formLearned from2 sentences. Facial challenges can be to laws.Logical formLearned from2 sentences.