A person may wear a (dust mask).Logical formLearned from17 sentences. A smile can be a mask.Logical formLearned from17 sentences. A mask can be alien.Logical formLearned from17 sentences. A male may wear a (ski mask).Logical formLearned from17 sentences. A mask can be opaque.Logical formLearned from17 sentences. A male may have a (gas mask).Logical formLearned from17 sentences. A mask can be placid.Logical formLearned from17 sentences. A female may have a mask.Logical formLearned from17 sentences. Masks can be decorative.Logical formLearned from17 sentences. Men may wear masks.Logical formLearned from17 sentences. Residents may wear surgical masks.Logical formLearned from17 sentences. Police can be in (gas masks).Logical formLearned from17 sentences. A mask can be safe.Logical formLearned from16 sentences. A mask can be green.Logical formLearned from16 sentences. A mask can be soft.Logical formLearned from16 sentences.