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: "specification format for reactive synthesis problems"
  Abstract: Automatic synthesis from a given specification automatically constructs correct implementation. This frees the user from the mundane implementation work, but still requires the specification. But is specifying easier than implementing? In this paper, we propose a user-friendly format to ease the specification work, in particularly, that of specifying partial implementations. Also, we provide scripts to convert specifications in the new format into the SYNTCOMP format, thus benefiting from state of the art synthesizers.

Connected through hyperedge HE-1 (induced by source paper "the 4th reactive synthesis competition syntcomp 2017 benchmarks participants results"):
  with members:
    - "bosy an experimentation framework for bounded synthesis"
    - "encodings of bounded synthesis"
    - "solving qbf by abstraction"
    - "the first reactive synthesis competition syntcomp 2014"
    - "the reactive synthesis competition syntcomp 2016 and beyond"
    - "bounded cycle synthesis"
    - "the 3rd reactive synthesis competition syntcomp 2016 benchmarks participants results"
    - "a high level ltl synthesis format tlsf v1 1"

Connected through hyperedge HE-2 (induced by source paper "the reactive synthesis competition syntcomp 2016 and beyond"):
  with members:
    - "solving qbf by abstraction"
    - "the first reactive synthesis competition syntcomp 2014"
    - "satisfiability based methods for reactive synthesis from safety specifications"
    - "the 3rd reactive synthesis competition syntcomp 2016 benchmarks participants results"
    - "a high level ltl synthesis format tlsf v1 1"
    - "the second reactive synthesis competition syntcomp 2015"
    - "compositional algorithms for succinct safety games"
    - "assume guarantee synthesis for concurrent reactive programs with partial information"

Connected through hyperedge HE-3 (induced by source paper "the 3rd reactive synthesis competition syntcomp 2016 benchmarks participants results"):
  with members:
    - "solving qbf by abstraction"
    - "the first reactive synthesis competition syntcomp 2014"
    - "the reactive synthesis competition syntcomp 2016 and beyond"
    - "a high level ltl synthesis format tlsf v1 1"
    - "the second reactive synthesis competition syntcomp 2015"
    - "compositional algorithms for succinct safety games"
    - "parameterized synthesis case study amba ahb"
    - "extended aiger format for synthesis"

Connected through hyperedge HE-4 (induced by source paper "using sygus to synthesize reactive motion plans"):
  with members:
    - "the first reactive synthesis competition syntcomp 2014"
    - "results and analysis of sygus comp 15"
    - "a high level ltl synthesis format tlsf v1 1 extended version"
    - "a multi paradigm language for reactive synthesis"
    - "language to specify syntax guided synthesis problems"

Connected through hyperedge HE-5 (induced by source paper "the second reactive synthesis competition syntcomp 2015"):
  with members:
    - "the first reactive synthesis competition syntcomp 2014"
    - "compositional algorithms for succinct safety games"
    - "sat based methods for circuit synthesis"
    - "incremental qbf solving"
    - "abssynthe abstract synthesis from succinct safety specifications"

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)