| TennisBall(tennis ball) | | tennis_ball |
| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Sports.kif 347-347 | Tennis ball is a subclass of ball |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 65587-65587 |
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