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: "generalized modal satisfiability"
  Abstract: It is well known that modal satisfiability is PSPACE-complete (Ladner 1977). However, the complexity may decrease if we restrict the set of propositional operators used. Note that there exist an infinite number of propositional operators, since a propositional operator is simply a Boolean function. We completely classify the complexity of modal satisfiability for every finite set of propositional operators, i.e., in contrast to previous work, we classify an infinite number of problems. We show that, depending on the set of propositional operators, modal satisfiability is PSPACE-complete, coNP-complete, or in P. We obtain this trichotomy not only for modal formulas, but also for their more succinct representation using modal circuits. We consider both the uni-modal and the multi-modal case, and study the dual problem of validity as well.

Connected through hyperedge HE-1 (induced by source paper "quirky quantifiers optimal models and complexity of computation tree logic"):
  with members:
    - "model checking ctl is almost always inherently sequential"

Connected through hyperedge HE-2 (induced by source paper "modal logics with hard diamond free fragments"):
  with members:
    - "does treewidth help in modal satisfiability"
    - "parameterized modal satisfiability"
    - "characterizing the np pspace gap in the satisfiability problem for modal logic"
    - "deciding regular grammar logics with converse through first order logic"
    - "the complexity of poor man s logic"

Connected through hyperedge HE-3 (induced by source paper "generalized satisfiability for the description logic alc"):
  with members:
    - "the complexity of satisfiability for fragments of hybrid logic part i"
    - "the complexity of satisfiability for sub boolean fragments of alc"
    - "the dl lite family and relations"
    - "the complexity of propositional implication"
    - "the complexity of generalized satisfiability for linear temporal logic"

Connected through hyperedge HE-4 (induced by source paper "model checking for modal dependence logic an approach through post s lattice"):
  with members:
    - "complexity results for modal dependence logic"
    - "complexity of model checking for modal dependence logic"
    - "on the applicability of post s lattice"
    - "the tractability of model checking for ltl the good the bad and the ugly fragments"

Connected through hyperedge HE-5 (induced by source paper "complexity of model checking for modal dependence logic"):
  with members:
    - "complexity results for modal dependence logic"
    - "model checking ctl is almost always inherently sequential"
    - "the complexity of poor man s logic"

Connected through hyperedge HE-6 (induced by source paper "minimization for generalized boolean formulas"):
  with members:
    - "complexity of non monotonic logics"
    - "distributed reasoning in a peer to peer setting application to the semantic web"
    - "the complexity of boolean constraint isomorphism"

Connected through hyperedge HE-7 (induced by source paper "complexity results for modal dependence logic"):
  with members:
    - "the complexity of poor man s logic"

Connected through hyperedge HE-8 (induced by source paper "on the applicability of post s lattice"):
  with members:
    - "the complexity of satisfiability for fragments of hybrid logic part i"
    - "the complexity of reasoning for fragments of autoepistemic logic"
    - "the complexity of propositional implication"
    - "the complexity of reasoning for fragments of default logic"
    - "the complexity of generalized satisfiability for linear temporal logic"
    - "the tractability of model checking for ltl the good the bad and the ugly fragments"

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.CC(Computational Complexity)