Visualization not generated for owl:intersectionOf

[steffen-l]

See issue #106 created by @kartgk in the WebVOWL repo: https://github.com/VisualDataWeb/WebVOWL/issues/106

[BlackDark]

Probably caused by the missing definition on how to handle Restrictions in combination with intersection (and also other constructs). See snippet below:

<owl:Class rdf:about="&fibo-be-ge-ge;FederalGovernment">
	...
	<rdfs:subClassOf>
		<owl:Class>
			<owl:intersectionOf rdf:parseType="Collection">
				<owl:Restriction>
					<owl:onProperty rdf:resource="&fibo-fnd-rel-rel;governs"/>
					<owl:onClass rdf:resource="&fibo-fnd-plc-cty;FederalCapitalArea"/>
					<owl:minQualifiedCardinality rdf:datatype="&xsd;nonNegativeInteger">0</owl:minQualifiedCardinality>
				</owl:Restriction>
				<owl:Restriction>
					<owl:onProperty rdf:resource="&fibo-fnd-rel-rel;governs"/>
					<owl:onClass rdf:resource="&fibo-fnd-plc-cty;FederalState"/>
					<owl:minQualifiedCardinality rdf:datatype="&xsd;nonNegativeInteger">2</owl:minQualifiedCardinality>
				</owl:Restriction>
			</owl:intersectionOf>
		</owl:Class>
	</rdfs:subClassOf>
	...
</owl:Class>