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   Blackboard
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| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Media.kif 1085-1085 | Blackboard 是 DataDisplayDevice 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 1086-1086 | Blackboard 是 DataStorageDevice 的 subclass |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 1087-1087 | Blackboard 是 显示神器 的 subclass |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 64542-64542 |
| antecedent |
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| No TPTP formula. May not be expressible in strict first order. | Media.kif 1093-1095 | |
| No TPTP formula. May not be expressible in strict first order. | Media.kif 1089-1091 |
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