A facial expression may give evidence of interest.Logical formLearned from1 sentences. A facial expression may laugh.Logical formLearned from1 sentences. A facial expression can be characteristic of a person.Logical formLearned from1 sentences. A facial expression may show pleasure.Logical formLearned from1 sentences. A facial expression may be characterised by turn_upping corners of a mouth.Logical formLearned from1 sentences. A facial expression can be constituted-of-or-filled-with dislike.Logical formLearned from1 sentences. A gesture may be executed with facial muscles.Logical formLearned from1 sentences. A facial expression can be constituted-of-or-filled-with contempt.Logical formLearned from1 sentences. Cranial nerve may supply facial muscles.Logical formLearned from1 sentences. Posterior branch may pertain-to a facial vein.Logical formLearned from1 sentences. Posterior branch of a facial vein may be formed by temporal veins.Logical formLearned from1 sentences. Branches may pertain-to a facial vein.Logical formLearned from1 sentences. A facial vein may drain an upper lip.Logical formLearned from1 sentences. A facial vein may drain a lip.Logical formLearned from1 sentences. Vein may be formed by union of facial vein.Logical formLearned from1 sentences.