No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 9180-9180 | Rubber is a subclass of plant substance |
No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 9181-9181 | Rubber is a subclass of body substance |
No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 9182-9182 | Rubber is a subclass of hydrocarbon |