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: "sentiment protocol a decentralized protocol leveraging crowd sourced wisdom"
  Abstract: The wisdom of the crowd is a valuable asset in today's society. It is not only important in predicting elections but plays also an essential role in marketing and the financial industry. Having a trustworthy source of opinion can make forecasts more accurate and markets predictable. Until now, a fundamental problem of surveys is the lack of incentives for participants to provide accurate information. Classical solutions like small monetary rewards or the chance of winning a prize are often not very attractive and also do not prevent multiple entries or randomly filling in answers. In this work, we present a framework that solves both problems via a customizable incentivization framework.

Connected through hyperedge HE-1 (induced by source paper "zebralancer crowdsource knowledge atop open blockchain privately and anonymously"):
  with members:
    - "enigma decentralized computation platform with guaranteed privacy"
    - "double or nothing multiplicative incentive mechanisms for crowdsourcing"
    - "reputation based incentive protocols in crowdsourcing applications"

Connected through hyperedge HE-2 (induced by source paper "zebralancer private and anonymous crowdsourcing system atop open blockchain"):
  with members:
    - "enigma decentralized computation platform with guaranteed privacy"
    - "double or nothing multiplicative incentive mechanisms for crowdsourcing"
    - "reputation based incentive protocols in crowdsourcing applications"

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.CY(Computers and Society)