TDDPhone - Sigma Knowledge base Browser

appearance as argument number 1

(documentation TDDPhone EnglishLanguage "TDDPhone, which stands for Telecommunications Device for the Deaf, describes a Telephone that is designed so that Deaf people can use it")	Mid-level-ontology.kif 24353-24355
(subclass TDDPhone Telephone)	Mid-level-ontology.kif 24352-24352	TDDPhone is a subclass of telephone

antecedent

(=>
    (instance ?TDD TDDPhone)
    (hasPurpose ?TDD
        (exists (?AGENT ?PHONING)
            (and
                (instance ?PHONING Telephoning)
                (instrument ?PHONING ?TDD)
                (agent ?PHONING ?AGENT)
                (attribute ?AGENT Deaf)))))

Mid-level-ontology.kif 24357-24365

If a physical is an instance of TDDPhone,
then the physical purpose there exist an entity and another entity such that the other entity is an instance of telephoning and the physical is an instrument for the other entity and the entity is an agent of the other entity and deaf is an attribute of the entity

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