No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 11386-11386 | Pericardial sac is a subclass of animal anatomical structure |
No TPTP formula. May not be expressible in strict first order. | Mid-level-ontology.kif 11387-11387 | Pericardial sac is a subclass of container |