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 "modeling temporal constraints for a system of interactive scores"):
  Abstract: In this chapter we explain briefly the fundamentals of the interactive scores formalism. Then we develop a solution for implementing the ECO machine by mixing petri nets and constraints propagation. We also present another solution for implementing the ECO machine using concurrent constraint programming. Finally, we present an extension of interactive score with conditional branching.

Includes members:
  Member "process ordering in a process calculus for spatially explicit ecological models":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "a general overview of formal languages for individual based modelling of ecosystems")
  Member "mean field semantics for a process calculus for spatially explicit ecological models":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "a general overview of formal languages for individual based modelling of ecosystems")
  Member "structured interactive music scores":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "a general overview of formal languages for individual based modelling of ecosystems")
  Member "an extension of interactive scores for multimedia scenarios with temporal relations for micro and macro controls":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "current trends and future research directions for interactive music")

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.SD(Sound)