human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge is induced by one source paper and its member nodes are the cited papers.

Details of the hypergraph:
Center hyperedge (induced by source paper "well quasiorders and hierarchy theory"):
  Abstract: We discuss some applications of WQOs to several fields were hierarchies and reducibilities are the principal classification tools, notably to Descriptive Set Theory, Computability theory and Automata Theory. While the classical hierarchies of sets usually degenerate to structures very close to ordinals, the extension of them to functions requires more complicated WQOs, and the same applies to reducibilities. We survey some results obtained so far and discuss open problems and possible research directions.

Includes members:
  Member "on the state complexity of closures and interiors of regular languages with subwords and superwords":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "decidability complexity and expressiveness of first order logic over the subword ordering")
  Member "decidability in the logic of subsequences and supersequences":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "languages ordered by the subword order")
  Member "generalized post embedding problems":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "decidability complexity and expressiveness of first order logic over the subword ordering")
  Member "the height of piecewise testable languages with applications in logical complexity":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "scattered factor universality of words")
  Member "fragments of first order logic over infinite words":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "quantifier alternation for infinite words")

Question: Please tell me which class the source paper 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)