| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Sports.kif 252-252 | |
| No TPTP formula. May not be expressible in strict first order. | Sports.kif 251-251 | Formula one racing is a subclass of car racing |
| appearance as argument number 2 |
|
|
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 64886-64886 |
|
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Sigma version 3.0 is open source software produced by Articulate Software and its partners