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No TPTP formula. May not be expressible in strict first order. Economy.kif 106-106 Economic development level is a subclass of economic attribute
No TPTP formula. May not be expressible in strict first order. Economy.kif 117-117 UN economic development level is a subclass of economic development level
No TPTP formula. May not be expressible in strict first order. Economy.kif 415-415 World bankGNI per capita level is a subclass of economic development level
No TPTP formula. May not be expressible in strict first order. Economy.kif 515-515 IMF development level is a subclass of economic development level


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