What Are Knowledge Graphs? How Search Engines Understand Entities

A knowledge graph is a structured database of real world entities and the relationships between them. Instead of storing information as pages of text, a knowledge graph organises knowledge as a network of connected facts.

The Semantic Triple

Every fact in a knowledge graph follows a triple structure: Subject, Predicate, Object. For example: "Melbourne" (subject) "is located in" (predicate) "Victoria" (object).

Google's Knowledge Graph

Google launched its Knowledge Graph in 2012 with the goal of understanding "things, not strings." It powers Knowledge Panels, entity disambiguation, People Also Ask, and AI Overviews.

SEO Implications

• Implement Schema.org structured data to help Google identify entities on your pages
• Build a consistent entity presence across Wikipedia, Wikidata, and authoritative sources
• Use clear, unambiguous entity references throughout your content