Students may wear masks.Logical formLearned from9 sentences. Masks may pertain-to catchers.Logical formLearned from9 sentences. Children may wear masks.Logical formLearned from9 sentences. Masks can be expressive.Logical formLearned from9 sentences. (Ski masks) can be dark.Logical formLearned from9 sentences. A (dust mask) can be disposable.Logical formLearned from9 sentences. A mask can be constituted-of-or-filled-with comedy.Logical formLearned from9 sentences. A (land mask) can be expanded.Logical formLearned from9 sentences. An option may cause a mask.Logical formLearned from9 sentences. Masks may pertain-to catcher.Logical formLearned from9 sentences. Masks can be fixed.Logical formLearned from9 sentences. A mask can be constituted-of-or-filled-with gold.Logical formLearned from9 sentences. A man may remove a mask.Logical formLearned from9 sentences. A mask can be detailed.Logical formLearned from9 sentences. An aide may fit a (gas mask).Logical formLearned from9 sentences.