XML benchmarks are tools used for measuring and evaluating the performance of new XML developments such as XML/RDBMS/OO mapping techniques and XML storages. With XML benchmarks, the evaluation process is done by executing predefined query-set over the benchmark's dataset members; where the performance of the new development is compared against the performance of some existing techniques. Yet, none of the existing XML benchmarks seems directly investigated the effect of sought data location on the query performance. This research is an attempt to investigate the rationale of adding the Data Dimension (DD) to the 3D∼XBench features. To achieve this, a new set of queries was added to the query-set of the 3D∼XBench to test the effect of changing the location of the sought records. The preliminarily experimental results have shown that the query execution time is also driven by the location of the sought data in the underlying XML database; and therefore, the Data Dimension can be added to the existing features of the 3D XML Benchmark.