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: "a characterization theorem for a modal description logic"
  Abstract: Modal description logics feature modalities that capture dependence of knowledge on parameters such as time, place, or the information state of agents. E.g., the logic S5-ALC combines the standard description logic ALC with an S5-modality that can be understood as an epistemic operator or as representing (undirected) change. This logic embeds into a corresponding modal first-order logic S5-FOL. We prove a modal characterization theorem for this embedding, in analogy to results by van Benthem and Rosen relating ALC to standard first-order logic: We show that S5-ALC with only local roles is, both over finite and over unrestricted models, precisely the bisimulation invariant fragment of S5-FOL, thus giving an exact description of the expressive power of S5-ALC with only local roles.

Connected through hyperedge HE-1 (induced by source paper "a modal characterization theorem for a probabilistic fuzzy description logic"):
  with members:
    - "probability logic"
    - "a van benthem theorem for fuzzy modal logic"
    - "behavioral metrics via functor lifting"

Connected through hyperedge HE-2 (induced by source paper "a van benthem theorem for quantitative probabilistic modal logic"):
  with members:
    - "a modal characterization theorem for a probabilistic fuzzy description logic"
    - "a van benthem theorem for fuzzy modal logic"
    - "metric bisimulation games and real valued modal logics for coalgebras"
    - "logical characterization of bisimulation metrics"
    - "monadic second order logic and bisimulation invariance for coalgebras"
    - "behavioral metrics via functor lifting"
    - "neighbourhood structures bisimilarity and basic model theory"
    - "approximating a behavioural pseudometric without discount for probabilistic systems"

Connected through hyperedge HE-3 (induced by source paper "a van benthem theorem for fuzzy modal logic"):
  with members:
    - "bisimulation metrics for weighted automata"
    - "monadic second order logic and bisimulation invariance for coalgebras"
    - "a van benthem theorem for modal team semantics"
    - "behavioral metrics via functor lifting"
    - "neighbourhood structures bisimilarity and basic model theory"

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)