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:Phase II We compared the TC-1 results with 6 other machine learning algorithms, as available in a benchmark toolkit named Weka.(4) Weka runs were repeated with various feature set sizes, including a small (50) and large feature set (5000).
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