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: "exponential lower bounds and separation for query rewriting"
  Abstract: We establish connections between the size of circuits and formulas computing monotone Boolean functions and the size of first-order and nonrecursive Datalog rewritings for conjunctive queries over OWL 2 QL ontologies. We use known lower bounds and separation results from circuit complexity to prove similar results for the size of rewritings that do not use non-signature constants. For example, we show that, in the worst case, positive existential and nonrecursive Datalog rewritings are exponentially longer than the original queries; nonrecursive Datalog rewritings are in general exponentially more succinct than positive existential rewritings; while first-order rewritings can be superpolynomially more succinct than positive existential rewritings.

Connected through hyperedge HE-1 (induced by source paper "the lagrangian remainder of taylor s series distinguishes mathcal o f x time complexities to polynomials or not"):
  with members:
    - "the p versus np problem"

Connected through hyperedge HE-2 (induced by source paper "the complexity of ontology based data access with owl 2 ql and bounded treewidth queries"):
  with members:
    - "query rewriting and optimization for ontological databases"
    - "tree like queries in owl 2 ql succinctness and complexity results"
    - "acyclicity notions for existential rules and their application to query answering in ontologies"
    - "sound complete and minimal ucq rewriting for existential rules"

Connected through hyperedge HE-3 (induced by source paper "ontology mediated queries combined complexity and succinctness of rewritings via circuit complexity"):
  with members:
    - "the complexity of ontology based data access with owl 2 ql and bounded treewidth queries"
    - "theoretically optimal datalog rewritings for owl 2 ql ontology mediated queries"
    - "datalog rewritability of disjunctive datalog programs and its applications to ontology reasoning"
    - "tree like queries in owl 2 ql succinctness and complexity results"
    - "sound complete and minimal ucq rewriting for existential rules"
    - "ontology based data access a study through disjunctive datalog csp and mmsnp"
    - "rewriting ontological queries into small nonrecursive datalog programs"
    - "description logic tboxes model theoretic characterizations and rewritability"

Connected through hyperedge HE-4 (induced by source paper "theoretically optimal datalog rewritings for owl 2 ql ontology mediated queries"):
  with members:
    - "tree like queries in owl 2 ql succinctness and complexity results"

Connected through hyperedge HE-5 (induced by source paper "circuit complexity meets ontology based data access"):
  with members:
    - "the dl lite family and relations"

Connected through hyperedge HE-6 (induced by source paper "tree like queries in owl 2 ql succinctness and complexity results"):
  with members:
    - "on the succinctness of query rewriting over owl 2 ql ontologies with shallow chases"
    - "rewriting ontological queries into small nonrecursive datalog programs"
    - "the dl lite family and relations"

Connected through hyperedge HE-7 (induced by source paper "on the succinctness of query rewriting over owl 2 ql ontologies with shallow chases"):
  with members:
    - "rewriting ontological queries into small nonrecursive datalog programs"
    - "the dl lite family and relations"

Connected through hyperedge HE-8 (induced by source paper "query rewriting and optimization for ontological databases"):
  with members:
    - "rewriting ontological queries into small nonrecursive datalog programs"
    - "hypertree decompositions and tractable queries"

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)