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Term 1: Term 2:

(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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