Knowledge Graph

Google's database of entities (people, places, organizations, things) and their facts, shown as a panel beside or above the results.

Definition

What Knowledge Graph means

Google introduced the Knowledge Graph in 2012 as a database of entities and the relationships between them, so a search for a person or company can be answered with facts rather than only links. On the results page it appears as the knowledge panel: a title, a type, a short description usually credited to Wikipedia, and facts such as a birth date or headquarters.

Because the panel is built from Google's view of an entity, brands watch it: a wrong description or a missing panel is a signal that Google has not connected the brand to its sources.

Clair returns the panel as knowledge_graph with title, type, description, the description's source, and facts as label and value pairs. It is null when Google shows no panel.

In the data

How it appears in a response

GET /v1/search?engine=google_search&q=albert+einstein&country=us&page=1 · knowledge_graph

{
  "title": "Albert Einstein",
  "type": "Theoretical physicist",
  "description": "Albert Einstein was a German-born theoretical physicist best known for developing the theory of relativity.",
  "description_source": {
    "title": "Wikipedia",
    "url": "https://en.wikipedia.org/wiki/Albert_Einstein"
  },
  "facts": {
    "Born": "March 14, 1879, Ulm, Germany",
    "Height": "5′ 9″"
  }
}

The knowledge panel for "albert einstein". From a recorded Google Search API response.

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Glossary