🔬 Triple Dissector
Click on each part of the RDF triple to learn what it is and why it matters.
Triple 1 of 5
ex:Copenhagen ex:capitalOf ex:Denmark .
👆 Click on any part of the triple above to analyze it
📚 Remember:
IRI Can be Subject, Predicate, or Object
Literal Can ONLY be Object
Blank Node Can be Subject or Object
🩺 Syntax Surgeon
Find and fix the errors in this Turtle RDF. Click on a line to edit it, then check your work!
Challenge 1 of 3
1
@prefix ex: <http://example.org/>
2
@prefix rdf <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
3
4
ex:Alice ex:name "Alice .
5
ex:Alice a ex:Person
6
ex:Alice ex:age "25" .
🔄 Format Transformer
Convert RDF between different serialization formats. See how the same data looks in Turtle, N-Triples, and JSON-LD.
💡 Format Guide:
- Turtle: Human-readable, supports prefixes and shortcuts
- N-Triples: One triple per line, full IRIs, easy to process
- JSON-LD: JSON format with @context, great for web APIs
🧪 Datatype Laboratory
Experiment with RDF literals and datatypes. See how values are represented and compared.
✓ Boolean Creator
"true"^^xsd:boolean
Only "true" or "false" are valid boolean values
🧮 Comparison Tester
See why datatypes matter! Compare these values:
| Value A |
Value B |
A > B (String) |
A > B (Typed) |
"25" |
"100" |
TRUE (2 > 1) |
FALSE (25 < 100) |
"9" |
"10" |
TRUE (9 > 1) |
FALSE (9 < 10) |
"2024-01-15" |
"2024-02-01" |
FALSE |
FALSE (Jan < Feb) |
🏗️ Blank Node Builder
Create complex structures using blank nodes. Model an address or other nested data.
Generated Turtle:
@prefix ex: <http://example.org/> .
ex:Alice ex:hasAddress _:address1 .
_:address1 ex:street "Main Street" .
_:address1 ex:city "Copenhagen" .
⚠️ When to use Blank Nodes:
- ✓ Intermediate structures (addresses, coordinates)
- ✓ Data that won't be referenced externally
- ✗ Don't use if you need to link from other documents
- ✗ Don't use for important entities that need global identity
🎮 Prefix Master
Compress full IRIs into prefixed form as fast as you can! Beat your high score!
Score: 0
🔥 Streak: 0
Available Prefixes:
rdf: = http://www.w3.org/1999/02/22-rdf-syntax-ns#
rdfs: = http://www.w3.org/2000/01/rdf-schema#
xsd: = http://www.w3.org/2001/XMLSchema#
foaf: = http://xmlns.com/foaf/0.1/
schema: = https://schema.org/
ex: = http://example.org/
Press "Start Game" to begin!
📝 Chapter 3 Quiz
Test your understanding of RDF concepts!
📋 RDF Cheat Sheet
Your quick reference for all things RDF.
🏷️ Standard Prefixes
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix schema: <https://schema.org/> .
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
✍️ Turtle Syntax
Semicolon ; = same subject
ex:Alice ex:name "Alice" ;
ex:age 30 .
Comma , = same subject + predicate
ex:Alice ex:knows ex:Bob, ex:Carol .
a = rdf:type
ex:Alice a foaf:Person .
[ ] = anonymous blank node
ex:Alice ex:address [ ex:city "CPH" ] .
🔢 XSD Datatypes
xsd:string "hello"
xsd:integer "42"^^xsd:integer
xsd:decimal "3.14"^^xsd:decimal
xsd:float "3.14"^^xsd:float
xsd:boolean "true"^^xsd:boolean
xsd:date "2024-01-15"^^xsd:date
xsd:dateTime "2024-01-15T14:30:00"^^xsd:dateTime
xsd:anyURI "http://..."^^xsd:anyURI
📍 Term Position Rules
Subject Predicate Object
IRI ✓ ✓ ✓
Literal ✗ ✗ ✓
Blank Node ✓ ✗ ✓
⚠️ Only IRIs can be predicates!
📄 Serialization Formats
Turtle (.ttl)
Human-readable, prefixes, shortcuts
N-Triples (.nt)
One triple/line, full IRIs, streamable
JSON-LD (.jsonld)
JSON with @context, web-friendly
RDF/XML (.rdf)
XML format, legacy support