7. The system of claim 1 wherein the correspondence test is configured to compare an identifier of the element with an identifier of an object property of the class of the further entity group and an identifier of a range of the object property.
7. The system of claim 1 wherein the correspondence test is configured to compare an identifier of the element with an identifier of an object property of the class of the further entity group and an identifier of a range of the object property. 8. The system of claim 7 wherein the correspondence test is configured to test if the identifier of the element corresponds to the identifier of the object property and the identifier of the range according to a third similarity test.