No TPTP formula. May not be expressible in strict first order. | Geography.kif 2915-2915 | Sanitation is a subclass of removing |
No TPTP formula. May not be expressible in strict first order. | Geography.kif 2920-2920 | Sewage disposal is a subclass of sanitation |
No TPTP formula. May not be expressible in strict first order. | Geography.kif 2921-2921 | Solid waste disposal is a subclass of sanitation |