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:A modified version of the ‚ÄùMaze Game‚Äù, devised by Garrod and Anderson (1987) was developed. This task creates a recurrent need for pairs of participants to produce location descriptions. These descriptions can be reliably classified into four broad categories (see below). Alignment of the category of description used by participants can then be used as an index of semantic coordination (Garrod and Anderson, 1987; Garrod and Doherty, 1994). To support turn-level experimental manipulations of the dialogues the chat-tool technique described by Healey, Purver, King, Ginzburg, and Mills (2003) was used.
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