| No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 780-780 | Written communication is a subclass of linguistic communication |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 202-202 | Emailing is a subclass of written communication |
| No TPTP formula. May not be expressible in strict first order. | ComputerInput.kif 2880-2880 | Posting on blog is a subclass of written communication |
| No TPTP formula. May not be expressible in strict first order. | ComputerInput.kif 2896-2896 | Tweeting is a subclass of written communication |
| No TPTP formula. May not be expressible in strict first order. | ComputerInput.kif 2916-2916 | Web chatting is a subclass of written communication |
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