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 "buffered simulation games for buchi automata"):
  Abstract: We introduce buffered simulations, a family of simulation relations that better approximate language inclusion than standard simulations. Buffered simulations are based on a two-player game in which the second player, called here Duplicator, may skip his turn and respond to a given move in a later round of the game. We consider various variants of these buffered simulations and es- tablish their decidability and exact complexity.

Includes members:
  Member "advanced automata minimization":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "language inclusion for finite prime event structures")
  Member "degrees of lookahead in regular infinite games":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "on computability of data word functions defined by transducers")
  Member "buchi complementation and size change termination":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "simulations in rank based b uchi automata complementation technical report")
  Member "antichains for the automata based approach to model checking":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "looking at mean payoff through foggy windows")

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.FL(Formal Languages and Automata Theory)