| Mask(mask) | | bar_mask, birdcage_mask, catcher's_mask, domino, eye_mask, face_guard, face_mask, false_face, fencer's_mask, fencing_mask, half_mask, mask, ski_mask, welder's_mask |
| appearance as argument number 1 |
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| (documentation Mask EnglishLanguage "Clothing for Covering the Face. This can be for disguise or decoration, to meet legal requirements, or for protection against airborne contaminents.") | Mid-level-ontology.kif 5097-5099 | |
| (subclass Mask (CoveringFn Face)) |
Mid-level-ontology.kif 5095-5095 | Mask is a subclass of a covering for face |
| (subclass Mask Clothing) | Mid-level-ontology.kif 5094-5094 | Mask is a subclass of clothing |
| appearance as argument number 2 |
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| (subclass Respirator Mask) | Cars.kif 3513-3513 | Respirator is a subclass of mask |
| (termFormat EnglishLanguage Mask "mask") | Mid-level-ontology.kif 5096-5096 | Respirator is a subclass of mask |
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