---
title: "N3 (Notation3)"
description: "Turtle plus rules: an RDF syntax that can also say if this, then that, so a reasoner can derive facts you never wrote down."
topic: "Structured Data & Schema"
canonical: "https://geordy.ai/glossary/structured-data/n3"
---
# N3 (Notation3)

Turtle plus rules: an RDF syntax that can also say if this, then that, so a reasoner can derive facts you never wrote down.

Notation3 extends Turtle with logic. As well as stating facts, it can state rules over them, which lets a reasoning engine conclude things that are implied rather than written. In practice it is used where the relationships matter more than the documents: classification, inference and validation over a knowledge graph.
---

Source: https://geordy.ai/glossary/structured-data/n3
This is a machine-readable markdown version of that page, generated by Geordy.