Published Event

• A set of topics

• A set of (attribute, value) pairs including

  • all mandatory attributes for the topics
  • (possibly) optional attributes for the topics.

Topics: generic_auction, Antiques,

Set of (attribute,value) : (price, 9000) ,(auction_category, table),

(description, {“oak”, “dinning table”},

(period, 1800), (style, Louis XV)

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