A male may speak through a (face mask).Logical formLearned from5 sentences. A venue may wear a (pig mask).Logical formLearned from5 sentences. Men may wear (gas masks).Logical formLearned from5 sentences. (Plastic masks) can be cone-shaped.Logical formLearned from5 sentences. (Plastic masks) may come in some sizes.Logical formLearned from5 sentences. Insurgents can be in black masks.Logical formLearned from5 sentences. A mask can be full-face.Logical formLearned from5 sentences. Police may find a mask.Logical formLearned from5 sentences. A mask can be ghostly.Logical formLearned from5 sentences. A (ski mask) can be over a face.Logical formLearned from5 sentences. A person may unveil masks of a civilization.Logical formLearned from5 sentences. Masks may pertain-to a civilization.Logical formLearned from5 sentences. Some protesters may wear (gas masks).Logical formLearned from5 sentences. A logo can be on_top_of a mask.Logical formLearned from5 sentences. Demonstrators may carry (gas masks).Logical formLearned from5 sentences.