| 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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| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 5103-5105 | |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 5101-5101 | Mask is a subclass of a covering for face |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 5100-5100 | Mask is a subclass of clothing |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | Cars.kif 3528-3528 | Respirator is a subclass of mask |
| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 5102-5102 |
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