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: "creating annotation tools with the annotation graph toolkit"
  Abstract: The Annotation Graph Toolkit is a collection of software supporting the development of annotation tools based on the annotation graph model. The toolkit includes application programming interfaces for manipulating annotation graph data and for importing data from other formats. There are interfaces for the scripting languages Tcl and Python, a database interface, specialized graphical user interfaces for a variety of annotation tasks, and several sample applications. This paper describes all the toolkit components for the benefit of would-be application developers.

Connected through hyperedge HE-1 (induced by source paper "a concise query language with search and transform operations for corpora with multiple levels of annotation"):
  with members:
    - "an integrated framework for treebanks and multilayer annotations"
    - "towards a query language for annotation graphs"
    - "a formal framework for linguistic annotation"

Connected through hyperedge HE-2 (induced by source paper "models and tools for collaborative annotation"):
  with members:
    - "tabletrans multitrans intertrans and treetrans diverse tools built on the annotation graph toolkit"
    - "annotation graphs and servers and multi modal resources infrastructure for interdisciplinary education research and development"
    - "the olac metadata set and controlled vocabularies"
    - "towards a query language for annotation graphs"
    - "a formal framework for linguistic annotation"

Connected through hyperedge HE-3 (induced by source paper "an integrated framework for treebanks and multilayer annotations"):
  with members:
    - "querying databases of annotated speech"
    - "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-4 (induced by source paper "tabletrans multitrans intertrans and treetrans diverse tools built on the annotation graph toolkit"):
  with members:
    - "an integrated framework for treebanks and multilayer annotations"
    - "models and tools for collaborative annotation"
    - "a formal framework for linguistic annotation"

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)