human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups authors who co-authored the same paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "BORIS -- An Experiment in In-Depth Understanding of Narratives."):
  Abstract: Abstract    boris  is an experimental story understanding and question answering system which deals with the specification and interaction of many sources of knowledge. Unlike skimmers, which simply extract the “gist” of a story in a top-down manner and ignore everything else,  boris  attempts to understand everything that it reads to as great a depth as possible. This report focuses on how the  boris  program handles a complex story involving a divorce.

Includes members:
  Member "An episodic knowledge representation for narrative texts":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "TENSE TREES AS THE "FINE STRUCTURE" OF DISCOURSE")
  Member "An overview of KRL, a Knowledge Representation Language":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "A knowledge-based application definition system")

Question: Please tell me which research area the co-authored paper (i.e., the source paper of the center hyperedge) belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science