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:Each of the following databases, HUGO [5], ExPASy [2,7] (Swiss-Prot and TREMBL names), ENSEMBL [3], GenBank [4], FlyBase [6] and Gene Ontology [9], comes with a list of synonyms, which were downloaded and entered into a separate table for each dataset.
Category: