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:Capacity building Baldwin et al. (2009) a
Brown et al. (2005) a
Salmon et al. (2010) a
Shannon et al. (2007) a
Weeks et al. (2006)
Pragmatics of participation and social inclusion in CBPR
Aldridge and Charles (2008)
DuBois et al. (2011)
Levine et al. (1991)
Rudolph et al. (2010) a
Salmon et al.…
Category: