| Petroleum is a thick, dark brown or greenish flammable liquid, which exists in the upper strata of some areas of the Earth's crust. |
| •owl:Thing |
| •SpatioTemporalThing |
| •Endurant |
| •PhysicalEndurant |
| •AmountOfMatter |
| •NaturalResource |
| •FossilFuel |
| •CrudeOil |
| •Petroleum |
| •Oil |
| •Petroleum |
| •CrudeOil |
| •Petroleum |
| •Petroleum |
| •CrudeOil |
| •Petroleum |
| •Oil |
| •Petroleum |
| •CrudeOil |
| •Petroleum |
| •Substance |
| •NaturalResource |
| •FossilFuel |
| •CrudeOil |
| •Petroleum |
| •Oil |
| •Petroleum |
| •CrudeOil |
| •Petroleum |
| •Petroleum |
| •CrudeOil |
| •Petroleum |
| •Oil |
| •Petroleum |
| •CrudeOil |
| •Petroleum |