human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "computer science and metaphysics a cross fertilization"
  Abstract: Computational philosophy is the use of mechanized computational techniques to unearth philosophical insights that are either difficult or impossible to find using traditional philosophical methods. Computational metaphysics is computational philosophy with a focus on metaphysics. In this paper, we (a) develop results in modal metaphysics whose discovery was computer assisted, and (b) conclude that these results work not only to the obvious benefit of philosophy but also, less obviously, to the benefit of computer science, since the new computational techniques that led to these results may be more broadly applicable within computer science. The paper includes a description of our background methodology and how it evolved, and a discussion of our new results.

Connected through hyperedge HE-1 (induced by source paper "a simplified supreme being necessarily exists says the computer computationally explored variants of g odel s ontological argument"):
  with members:
    - "computer supported analysis of positive properties ultrafilters and modal collapse in variants of godel s ontological argument"
    - "mechanizing principia logico metaphysica in functional type theory"
    - "automating godel s ontological proof of god s existence with higher order automated theorem provers"

Connected through hyperedge HE-2 (induced by source paper "designing normative theories of ethical reasoning formal framework methodology and tool support"):
  with members:
    - "a computational hermeneutic approach for conceptual explicitation"
    - "grunge a grand unified atp challenge"
    - "harnessing higher order meta logic to represent and reason with complex ethical theories"
    - "extensional higher order paramodulation in leo iii"
    - "building jiminy cricket an architecture for moral agreements among stakeholders"
    - "i o logic in hol first steps"
    - "the higher order prover leo iii"
    - "on automating the doctrine of double effect"

Connected through hyperedge HE-3 (induced by source paper "extensional higher order paramodulation in leo iii"):
  with members:
    - "grunge a grand unified atp challenge"
    - "encoding monomorphic and polymorphic types"
    - "cut simulation and impredicativity"

Connected through hyperedge HE-4 (induced by source paper "computer supported analysis of positive properties ultrafilters and modal collapse in variants of godel s ontological argument"):
  with members:
    - "automating godel s ontological proof of god s existence with higher order automated theorem provers"

Question: Please tell me which class the center node 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.LO(Logic in Computer Science)