These two fields allow to specify a different default assignee for ticket opened against this package in bugzilla. Note: The EPEL field is always displayed for packages in the 'rpms' namespace regardless of whether it is used in bugzilla or not.
rubygem-sinatra-0_10_1-1_fc12:F-12:rubygem-sinatra-0.10.1-1.fc12.src.rpm:1263307629