| (subclass DisplayArtifact Artifact) | Mid-level-ontology.kif 3796-3796 | Display artifact is a subclass of artifact |
| (subclass Sign DisplayArtifact) | Mid-level-ontology.kif 18507-18507 | Sign is a subclass of display artifact |
| (subclass Whiteboard DisplayArtifact) | Mid-level-ontology.kif 27522-27522 | Whiteboard is a subclass of display artifact |
| (subclass Blackboard DisplayArtifact) | Media.kif 1087-1087 | Blackboard is a subclass of display artifact |
| (subclass Poster DisplayArtifact) | Media.kif 1102-1102 | Poster is a subclass of display artifact |
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