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:evaluate the semantic clarity of each filter, we chose three benchmark datasets with landmark3/part annotations for training and testing, including the ILSVRC 2013 DET Animal-Part dataset [36], the CUB200-2011 dataset [30], and the Pascal VOC Part dataset [3].
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