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 "the logic of counting query answers"):
  Abstract: We consider the problem of counting the number of answers to a first-order formula on a finite structure. We present and study an extension of first-order logic in which algorithms for this counting problem can be naturally and conveniently expressed, in senses that are made precise and that are motivated by the wish to understand tractable cases of the counting problem.

Includes members:
  Member "counting answers to existential positive queries a complexity classification":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "counting answers to existential questions")
  Member "the tractability frontier of graph like first order query sets":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "counting answers to existential positive queries a complexity classification")
  Member "a trichotomy in the complexity of counting answers to conjunctive queries":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "counting answers to existential questions")
  Member "structural tractability of counting of solutions to conjunctive queries":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "counting answers to existential questions")
  Member "one hierarchy spawns another graph deconstructions and the complexity classification of conjunctive queries":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "polynomial kernels for hitting forbidden minors under structural parameterizations")
  Member "tree width for first order formulae":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "the theory of concatenation over finite models")
  Member "on the complexity of existential positive queries":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "when is ontology mediated querying efficient")

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)