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:Other categories might include ‘sex siren’, a category for masculine men who are judged for their sex appeal and physical attractiveness; ‘butch queen vogue’, a category that uses elements of vogue of hands, spins and dips; ‘femme queen’, and ‘virgin runway’, a category that is open to participants who are relatively new to the Ball scene (Dickson-Gomez et al., 2014; Galindo, 2013).
Category: