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 utility of untangling"):
  Abstract: In this note we show how techniques developed for untangling planar graphs by Bose et al. [Discrete & Computational Geometry 42(4): 570-585 (2009)] and Goaoc et al. [Discrete & Com- putational Geometry 42(4): 542-569 (2009)] imply new results about some recent graph drawing models. These include column planarity, universal point subsets, and partial simultaneous geometric embeddings (with or without mappings). Some of these results answer open problems posed in previous papers.

Includes members:
  Member "superpatterns and universal point sets":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "drawing arrangement graphs in small grids or how to play planarity")
  Member "sefe with no mapping via large induced outerplane graphs in plane graphs":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "on the mathcal np hardness of gracsim drawing and k sefe problems")
  Member "how many vertex locations can be arbitrarily chosen when drawing planar graphs":
    also connected through other hyperedges:
      (none)
  Member "on universal point sets for planar graphs":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "small superpatterns for dominance drawing")
  Member "simultaneous embedding of planar graphs":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "atomic embeddability clustered planarity and thickenability")
  Member "untangling planar graphs from a specified vertex position hard cases":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "drawing planar graphs with many collinear vertices")
  Member "untangling polygons and graphs":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "drawing planar graphs with many collinear vertices")
  Member "on a tree and a path with no geometric simultaneous embedding":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "the quasefe problem")

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.CG(Computational Geometry)