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: "characterization of strongly equivalent logic programs in intermediate logics"
  Abstract: The non-classical, nonmonotonic inference relation associated with the answer set semantics for logic programs gives rise to a relationship of 'strong equivalence' between logical programs that can be verified in 3-valued Goedel logic, G3, the strongest non-classical intermediate propositional logic (Lifschitz, Pearce and Valverde, 2001). In this paper we will show that KC (the logic obtained by adding axiom ~A v ~~A to intuitionistic logic), is the weakest intermediate logic for which strongly equivalent logic programs, in a language allowing negations, are logically equivalent.

Connected through hyperedge HE-1 (induced by source paper "combining intermediate propositional logics with classical logic"):
  with members:
    - "a modal logic amalgam of classical and intuitionistic propositional logic"
    - "algebraic semantics for a modal logic close to s1"

Connected through hyperedge HE-2 (induced by source paper "characterising equilibrium logic and nested logic programs reductions and complexity1 2"):
  with members:
    - "embedding non ground logic programs into autoepistemic logic for knowledge base combination"
    - "propositional theories are strongly equivalent to logic programs"
    - "a common view on strong uniform and other notions of equivalence in answer set programming"
    - "the dlv system for knowledge representation and reasoning"
    - "semantical characterizations and complexity of equivalences in answer set programming"
    - "tight logic programs"
    - "strong equivalence made easy nested expressions and weight constraints"
    - "a polynomial translation of logic programs with nested expressions into disjunctive logic programs preliminary report"

Connected through hyperedge HE-3 (induced by source paper "relativized hyperequivalence of logic programs for modular programming"):
  with members:
    - "modularity aspects of disjunctive stable models"
    - "a common view on strong uniform and other notions of equivalence in answer set programming"
    - "semantical characterizations and complexity of equivalences in answer set programming"
    - "strong equivalence made easy nested expressions and weight constraints"
    - "stable models and an alternative logic programming paradigm"

Connected through hyperedge HE-4 (induced by source paper "propositional theories are strongly equivalent to logic programs"):
  with members:
    - "weight constraints as nested expressions"

Connected through hyperedge HE-5 (induced by source paper "semantical characterizations and complexity of equivalences in answer set programming"):
  with members:
    - "the dlv system for knowledge representation and reasoning"
    - "bounded ltl model checking with stable models"
    - "strong equivalence made easy nested expressions and weight constraints"
    - "a logic programming approach to knowledge state planning ii the dlv k system"

Connected through hyperedge HE-6 (induced by source paper "a polynomial translation of logic programs with nested expressions into disjunctive logic programs preliminary report"):
  with members:
    - "bounded ltl model checking with stable models"

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)