19. The method of claim 13 wherein the correspondence test comprises comparing 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.
19. The method of claim 13 wherein the correspondence test comprises comparing 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. 20. The method of claim 19 wherein comparing the identifier of the element with the identifier of the object property and the identifier of the range comprises testing if the identifier of the element is similar to the identifier of the object property and the identifier of the range according to a third similarity test.