No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 8610-8610 | Hydrocarbon is a subclass of organic compound |
No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 9209-9209 | Rubber is a subclass of hydrocarbon |
No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 9222-9222 | Plastic is a subclass of hydrocarbon |