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: "a prototype of a knowledge based programming environment"
  Abstract: In this paper we present a proposal for a knowledge-based programming environment. In such an environment, declarative background knowledge, procedures, and concrete data are represented in suitable languages and combined in a flexible manner. This leads to a highly declarative programming style. We illustrate our approach on an example and report about our prototype implementation.

Connected through hyperedge HE-1 (induced by source paper "multi shot asp solving with clingo"):
  with members:
    - "plasp 3 towards effective asp planning"
    - "clingcon the next generation"
    - "a framework for easing the development of applications embedding answer set programming"
    - "driving cdcl search"
    - "complexity and compilation of gz aggregates in answer set programming"
    - "rewriting recursive aggregates in answer set programming back to monotonicity"
    - "predicate logic as a modelling language the idp system"
    - "clingo asp control preliminary report"

Connected through hyperedge HE-2 (induced by source paper "predicate logic as a modeling language modeling and solving some machine learning and data mining problems with idp3"):
  with members:
    - "predicate logic as a modelling language the idp system"
    - "lazy model expansion interleaving grounding with search"
    - "xsb extending prolog with tabled logic programming"
    - "constraint propagation for first order logic and inductive definitions"
    - "grounding fo and fo id with bounds"
    - "the dlv system for knowledge representation and reasoning"
    - "efficient constraint propagation engines"
    - "well founded and stable semantics of logic programs with aggregates"

Connected through hyperedge HE-3 (induced by source paper "simulating dynamic systems using linear time calculus theories"):
  with members:
    - "predicate logic as a modelling language the idp system"
    - "an enhanced features extractor for a portfolio of constraint solvers"
    - "towards a logic based unifying framework for computing"
    - "splitting an operator algebraic modularity results for logics with fixpoint semantics"

Connected through hyperedge HE-4 (induced by source paper "clingo asp control preliminary report"):
  with members:
    - "predicate logic as a modelling language the idp system"
    - "asp modulo csp the clingcon system"
    - "the dlv system for knowledge representation and reasoning"

Connected through hyperedge HE-5 (induced by source paper "model revision inference for extensions of first order logic"):
  with members:
    - "lifted unit propagation for effective grounding"

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.AI(Artificial Intelligence)