Query {'flat': 'on', 'database': 'data', 'fields': {'a.source-value': 1, '_id': 0, 'meta.runner._id': 1}, 'project': ['a.source-value'], 'limit': 1, 'query': {'meta.runner._id': {'$regex': 'TE_186542553312'}, 'meta.subject._id': u'Tersoff_LAMMPS_Erhart_Juslin_Goy_Nordlund_Mueller_Albe_ZnO__MO_616776018688_001'}} matched documents for the following UUIDs: [u'TE_186542553312_004-and-MO_616776018688_001-1529368533-tr']