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:thaliana from the following sources, GenBank [4], FlyBase [6], ExPASy [2,7], HUGO [5], ENSEMBL [3], UCSC [8], and Gene Ontology [9].
Category: