| (subclass MediaSystem Collection) | Mid-level-ontology.kif 14449-14449 | |
| (subclass VideoGamePlayer MediaSystem) | Mid-level-ontology.kif 25883-25883 | |
| (subclass MultimediaProjector MediaSystem) | Mid-level-ontology.kif 26224-26224 | |
| (subclass AudioCDSystem MediaSystem) | Media.kif 1204-1204 | |
| (subclass DVDSystem MediaSystem) | Media.kif 1269-1269 | |
| (subclass VCRSystem MediaSystem) | Media.kif 1382-1382 | |
| (subclass AppleIPod MediaSystem) | ComputingBrands.kif 817-817 |
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