"Semantic Web and Knowledge Graph" Experimental Manual

Experiment 1 RDF (RDFS) application
purpose:
(1) Understand the semantic web resource description language;
(2) Master the use of RDF(S).

content:
[Exercise 1] Consider the following RDF document:
<rdf:RDF
xmlns:rdf=“http://www.w3.org/1999/02/22-rdf-syntax-ns#”
xmlns:rdfs=“http://www.w3.org/2000/01/rdf-schema#”
xmlns:iswww=“http://sw.edu/#”

<rdf:Description rdf:about=“http://sw.edu/#germany”>
<rdf:type rdf:resource=“http://sw.edu/#country” />
</rdf:Description>
<rdf:Description rdf:about=“http://sw.edu/#capital_of”>
<rdf:type rdf:resource=“http://www.w3.org/1999/02/22-rdf-syntax-ns#Property”/>
<rdfs:domain rdf:resource=“http://sw.edu/#city” />
<rdfs:range rdf:resource=“http://sw.edu/#country” />
</rdf:Description>
<rdf:Description rdf:about=“http://sw.edu/#country”>
<rdf:type rdf:resource=“http://www.w3.org/2000/01/rdf-schema#Class” />
<rdfs:label xml:lang=“de”>Land</rdfs:label>
</rdf:Description>
<rdf:Description rdf:about=“http://sw.edu/#berlin”>
<rdfs:label xml:lang=“en”>Berlin</rdfs:label>
<rdf:type rdf:resource=“http://sw.edu/#city” />
<iswww:capital_of rdf:resource=“http://sw.edu/#germany” />
</rdf:Description>
<rdf:Description rdf:about=“http://sw.edu/#city”>
<rdf:type rdf:resource=“http://www.w3.org/2000/01/rdf-schema#Class” />
<rdfs:label xml:lang=“de”>Stadt</rdfs:label>
</rdf:Description>
</rdf:RDF>
• Describe in natural language the content of this document.
• Draw the graph representation of the above document.

1. germany is country
   capital_of is an attribute of city and the value of country.
   country is called land in German
   berlin is Berlin in English, a city in Germany
   berlin is called Stadt in German

[Exercise 2] Write down the modeled list authors of this book from following RDF graph in Turtle syntax.
Hitzler
Krotzsch
Rudolph
[Exercise 3] Write the following Turtle triple in RDF/XML syntax:
:Person rdfs:comment “Represents the set of all people.”^^xsd:string .

<rdf:RDF xmlns:rdf=“http://www.w3.org/1999/02/22-rdf-syntax-ns#”
xmlns:rdfs=“http://www.w3.org/2000/01/rdf-schema#”>
<rdf:Description rdf:about=“http://Person”>
<rdfs:comment rdf:datatype=“http://www.w3.org/2001/XMLSchema#string”>
Represents the set of all people
</rdfs:comment>
</rdf:Description>
</rdf:RDF>
【Exercise 4】 Represent the following sentences graphically by means of reified triples:
 Romeo thought that Juliet was dead.
 John believes that Mary wants to marry him.
 The dwarf noticed that somebody had been eating from his plate.