text: from tecton import Entity
  
  partner_entity = Entity(name="PartnerWebsite", default_join_keys=["partner_id"], description="The partner website participating in the ad network.")
  ad_entity = Entity(name="Ad", default_join_keys=["ad_id"], description="The ad")
  content_keyword_entity = Entity(name="ContentKeyword", default_join_keys=["content_keyword"], description="The keyword describing the content this ad is being placed alongside.")
  ad_campaign_entity = Entity(name="AdCampaign", default_join_keys=["ad_campaign_id"], description="The ad campaign")
  ad_group_entity = Entity(name="AdGroup", default_join_keys=["ad_group_id"], description="The ad group")
  ad_content_entity = Entity(name="AdContent", default_join_keys=["ad_content_id"], description="The content of an ad")
  user_entity = Entity(name="User", default_join_keys=["user_uuid"], description="A user on a given website. Users are fingerprinted based on device id, etc.")
  auction_entity = Entity(name="Auction", default_join_keys=["auction_id"], description="An ad auction")
  placement_entity = Entity(name="AdPlacement", default_join_keys=["ad_display_placement"], description="Placement of an ad", owner="kzhao@okcupid.com")
  