5. The method of claim 4 , wherein the geographic data set is a tree structure wherein different positions in the tree structure that share a same level correspond to different geographic locations that share a same geographic region type.
5. The method of claim 4 , wherein the geographic data set is a tree structure wherein different positions in the tree structure that share a same level correspond to different geographic locations that share a same geographic region type. 9. The method of claim 5 , wherein determining a relationship between the first geographic entity name and the second geographic entity name comprises determining that a second position for the second geographic entity name in the tree structure is an ancestor of a first position for the first geographic entity name in the tree structure.