Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:We evaluate our method over both real and synthetic RDF datasets, and compare our approach with the state-of-the-art distributed RDF systems, including a cloud-based approach (EAGRE [48]), two partition-based approaches (GraphPartition [22] and TripleGroup [28]), two memory-based systems (TriAD [18] and Trinity.
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