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: "querying databases of annotated speech"
  Abstract: Annotated speech corpora are databases consisting of signal data along with time-aligned symbolic `transcriptions'. Such databases are typically multidimensional, heterogeneous and dynamic. These properties present a number of tough challenges for representation and query. The temporal nature of the data adds an additional layer of complexity. This paper presents and harmonises two independent efforts to model annotated speech databases, one at Macquarie University and one at the University of Pennsylvania. Various query languages are described, along with illustrative applications to a variety of analytical problems. The research reported here forms a part of several ongoing projects to develop platform-independent open-source tools for creating, browsing, searching, querying and transforming linguistic databases, and to disseminate large linguistic databases over the internet.

Connected through hyperedge HE-1 (induced by source paper "an integrated framework for treebanks and multilayer annotations"):
  with members:
    - "creating annotation tools with the annotation graph toolkit"
    - "tabletrans multitrans intertrans and treetrans diverse tools built on the annotation graph toolkit"
    - "towards a query language for annotation graphs"
    - "a formal framework for linguistic annotation"

Connected through hyperedge HE-2 (induced by source paper "annotation graphs and servers and multi modal resources infrastructure for interdisciplinary education research and development"):
  with members:
    - "many uses many annotations for large speech corpora switchboard and tdt as case studies"
    - "towards a query language for annotation graphs"
    - "a formal framework for linguistic annotation"

Connected through hyperedge HE-3 (induced by source paper "a formal framework for linguistic annotation revised version"):
  with members:
    - "many uses many annotations for large speech corpora switchboard and tdt as case studies"
    - "towards a query language for annotation graphs"
    - "atlas a flexible and extensible architecture for linguistic annotation"
    - "annotation graphs as a framework for multidimensional linguistic data analysis"

Connected through hyperedge HE-4 (induced by source paper "atlas a flexible and extensible architecture for linguistic annotation"):
  with members:
    - "towards a query language for annotation graphs"
    - "a formal framework for linguistic annotation"

Connected through hyperedge HE-5 (induced by source paper "towards a query language for annotation graphs"):
  with members:
    - "a formal framework for linguistic annotation"

Connected through hyperedge HE-6 (induced by source paper "a formal framework for linguistic annotation"):
  with members:
    - "many uses many annotations for large speech corpora switchboard and tdt as case studies"
    - "towards a query language for annotation graphs"
    - "atlas a flexible and extensible architecture for linguistic annotation"
    - "annotation graphs as a framework for multidimensional linguistic data analysis"

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.CL(Computation and Language)