A demonstrator may wear a mask.Logical formLearned from8 sentences. A mask may be specified.Logical formLearned from8 sentences. A channel may define a mask.Logical formLearned from8 sentences. A mask can be unreasoning.Logical formLearned from8 sentences. A female may find a mask.Logical formLearned from8 sentences. Holes can be in a mask.Logical formLearned from8 sentences. Masks may be designed.Logical formLearned from8 sentences. An owner may pertain-to a mask.Logical formLearned from8 sentences. A mask can be composite.Logical formLearned from8 sentences. A male may throw_off a mask.Logical formLearned from8 sentences. Demand can be for masks.Logical formLearned from8 sentences. Masks can be in place.Logical formLearned from8 sentences. Masks can be given.Logical formLearned from8 sentences. A color may pertain-to a mask.Logical formLearned from8 sentences. Supplemental oxygen can be by mask.Logical formLearned from8 sentences.