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: "practical reasoning for expressive description logics"
  Abstract: Description Logics (DLs) are a family of knowledge representation formalisms mainly characterised by constructors to build complex concepts and roles from atomic ones. Expressive role constructors are important in many applications, but can be computationally problematical. We present an algorithm that decides satisfiability of the DL ALC extended with transitive and inverse roles, role hierarchies, and qualifying number restrictions. Early experiments indicate that this algorithm is well-suited for implementation. Additionally, we show that ALC extended with just transitive and inverse roles is still in PSPACE. Finally, we investigate the limits of decidability for this family of DLs.

Connected through hyperedge HE-1 (induced by source paper "reasoning with forest logic programs and f hybrid knowledge bases"):
  with members:
    - "open answer set programming with guarded programs"
    - "complexity results and practical algorithms for logics in knowledge representation"

Connected through hyperedge HE-2 (induced by source paper "strong completeness of coalgebraic modal logics"):
  with members:
    - "strongly complete logics for coalgebras"
    - "plausibility measures and default reasoning"

Connected through hyperedge HE-3 (induced by source paper "conjunctive query answering for the description logic shiq"):
  with members:
    - "complexity results and practical algorithms for logics in knowledge representation"
    - "reasoning with individuals for the description logic shiq"

Connected through hyperedge HE-4 (induced by source paper "reasoning with very expressive fuzzy description logics"):
  with members:
    - "an alternative proof method for possibilistic logic and its application to terminological logics"
    - "description logics with fuzzy concrete domains"
    - "complexity results and practical algorithms for logics in knowledge representation"
    - "reasoning within fuzzy description logics"
    - "reasoning with individuals for the description logic shiq"

Connected through hyperedge HE-5 (induced by source paper "complexity results and practical algorithms for logics in knowledge representation"):
  with members:
    - "the complexity of reasoning with cardinality restrictions and nominals in expressive description logics"
    - "reasoning with individuals for the description logic shiq"
    - "pspace reasoning for graded modal logics"
    - "reasoning with axioms theory and pratice"
    - "a semantics and complete algorithm for subsumption in the classic description logic"
    - "decidable reasoning in terminological knowledge representation systems"

Connected through hyperedge HE-6 (induced by source paper "information integration and computational logic"):
  with members:
    - "comparative analysis of five xml query languages"

Connected through hyperedge HE-7 (induced by source paper "the complexity of reasoning with cardinality restrictions and nominals in expressive description logics"):
  with members:
    - "pspace reasoning for graded modal logics"
    - "a semantics and complete algorithm for subsumption in the classic description logic"

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)