No TPTP formula. May not be expressible in strict first order.	domainEnglishFormat.kif 7200-7200
No TPTP formula. May not be expressible in strict first order.	domainEnglishFormat.kif 7199-7199
No TPTP formula. May not be expressible in strict first order.	domainEnglishFormat.kif 7198-7198

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Sigma version 3.0 is open source software produced by Articulate Software and its partners