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: "deciding regular grammar logics with converse through first order logic"
  Abstract: We provide a simple translation of the satisfiability problem for regular grammar logics with converse into GF2, which is the intersection of the guarded fragment and the 2-variable fragment of first-order logic. This translation is theoretically interesting because it translates modal logics with certain frame conditions into first-order logic, without explicitly expressing the frame conditions. #R##N#A consequence of the translation is that the general satisfiability problem for regular grammar logics with converse is in EXPTIME. This extends a previous result of the first author for grammar logics without converse. Using the same method, we show how some other modal logics can be naturally translated into GF2, including nominal tense logics and intuitionistic logic. #R##N#In our view, the results in this paper show that the natural first-order fragment corresponding to regular grammar logics is simply GF2 without extra machinery such as fixed point-operators.

Connected through hyperedge HE-1 (induced by source paper "on the complexity of graded modal logics with converse"):
  with members:
    - "a note on the complexity of the satisfiability problem for graded modal logics"
    - "complexity of the guarded two variable fragment with counting quantifiers"
    - "pspace reasoning for graded modal logics"

Connected through hyperedge HE-2 (induced by source paper "extending consequence based reasoning to sriq"):
  with members:
    - "hypertableau reasoning for description logics"

Connected through hyperedge HE-3 (induced by source paper "modal logics with hard diamond free fragments"):
  with members:
    - "does treewidth help in modal satisfiability"
    - "parameterized modal satisfiability"
    - "generalized modal satisfiability"
    - "characterizing the np pspace gap in the satisfiability problem for modal logic"
    - "the complexity of poor man s logic"

Connected through hyperedge HE-4 (induced by source paper "clausal resolution for modal logics of confluence"):
  with members:
    - "on the correspondence between display postulates and deep inference in nested sequent calculi for tense logics"
    - "a system of interaction and structure"

Connected through hyperedge HE-5 (induced by source paper "acyclicity notions for existential rules and their application to query answering in ontologies"):
  with members:
    - "nominals inverses counting and conjunctive queries or why infinity is your friend"
    - "on chase termination beyond stratification"
    - "hypertableau reasoning for description logics"
    - "conjunctive query answering for the description logic shiq"
    - "the dlv system for knowledge representation and reasoning"

Connected through hyperedge HE-6 (induced by source paper "grammar logics in nested sequent calculus proof theory and decision procedures"):
  with members:
    - "on the correspondence between display postulates and deep inference in nested sequent calculi for tense logics"
    - "cut elimination and proof search for bi intuitionistic tense logic"
    - "optimal and cut free tableaux for propositional dynamic logic with converse"
    - "a system of interaction and structure"

Connected through hyperedge HE-7 (induced by source paper "hypertableau reasoning for description logics"):
  with members:
    - "blocking and other enhancements for bottom up model generation methods"
    - "complexity results and practical algorithms for logics in knowledge representation"
    - "the complexity of reasoning with cardinality restrictions and nominals in expressive description logics"
    - "reasoning with individuals for the description logic shiq"
    - "decidable reasoning in terminological knowledge representation systems"

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)