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: "knowledge based synthesis of distributed systems using event structures"
  Abstract: To produce a program guaranteed to satisfy a given specification one can#N#synthesize it from a formal constructive proof that a computation satisfying#N#that specification exists. This process is particularly effective if the#N#specifications are written in a high-level language that makes it easy for#N#designers to specify their goals. We consider a high-level specification#N#language that results from adding knowledge to a fragment of Nuprl specifically#N#tailored for specifying distributed protocols, called event theory. We then#N#show how high-level knowledge-based programs can be synthesized from the#N#knowledge-based specifications using a proof development system such as Nuprl.#N#Methods of Halpern and Zuck then apply to convert these knowledge-based#N#protocols to ordinary protocols. These methods can be expressed as heuristic#N#transformation tactics in Nuprl.

Connected through hyperedge HE-1 (induced by source paper "a knowledge based analysis of global function computation"):
  with members:
    - "modeling belief in dynamic systems part i foundations"
    - "using counterfactuals in knowledge based programming"

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)