human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "fedora an architecture for complex objects and their relationships"):
  Abstract: The Fedora architecture is an extensible framework for the storage, management, and dissemination of complex objects and the relationships among them. Fedora accommodates the aggregation of local and distributed content into digital objects and the association of services with objects. This al-lows an object to have several accessible representations, some of them dy-namically produced. The architecture includes a generic RDF-based relation-ship model that represents relationships among objects and their components. Queries against these relationships are supported by an RDF triple store. The architecture is implemented as a web service, with all aspects of the complex object architecture and related management functions exposed through REST and SOAP interfaces. The implementation is available as open-source soft-ware, providing the foundation for a variety of end-user applications for digital libraries, archives, institutional repositories, and learning object systems.

Includes members:
  Member "flexible and extensible digital object and repository architecture fedora":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "the mellon fedora project digital library architecture meets xml and web services")
  Member "policy carrying policy enforcing digital objects":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "the mellon fedora project digital library architecture meets xml and web services")
  Member "the mellon fedora project digital library architecture meets xml and web services":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "when should i make preservation copies of myself")
  Member "adore a modular standards based digital object repository":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "when should i make preservation copies of myself")
  Member "an information network overlay architecture for the nsdl":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "ncore architecture and implementation of a flexible collaborative digital library")

Question: Please tell me which class the source paper belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.DL(Digital Libraries)