| Coal(coal)
| | anthracite, anthracite_coal, bituminous_coal, coal, hard_coal, sea_coal, soft_coal, steam_coal |
| appearance as argument number 1 |
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| No TPTP formula. May not be expressible in strict first order. | Geography.kif 1972-1976 | |
| No TPTP formula. May not be expressible in strict first order. | pictureList.kif 856-856 | |
| No TPTP formula. May not be expressible in strict first order. | Geography.kif 1968-1968 | Coal is a subclass of fossil fuel |
| No TPTP formula. May not be expressible in strict first order. | Geography.kif 1967-1967 | Coal is a subclass of mineral |
| No TPTP formula. May not be expressible in strict first order. | Geography.kif 1969-1969 | Coal is a subclass of rock |
| appearance as argument number 2 |
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| No TPTP formula. May not be expressible in strict first order. | Economy.kif 1720-1720 | Coal is an industry product type of coal mining |
| No TPTP formula. May not be expressible in strict first order. | Geography.kif 1970-1970 | Coal has name "coal" |
| No TPTP formula. May not be expressible in strict first order. | Geography.kif 1953-1953 | Brown coal is a subclass of coal |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 15259-15259 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 15258-15258 | |
| No TPTP formula. May not be expressible in strict first order. | domainEnglishFormat.kif 15257-15257 |
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