Building the search query in presence of several rdfs:range

[jmvanel]

In presence of several rdfs:range , take the most specific class (es)
for building the SPARQL search query,
and anyway eliminate non interesting classes like like rdfs:Resource and owl:Thing .

Use case : the ISWC 2017 data contain bad triples like :

 <http://xmlns.com/foaf/0.1/maker> rdfs:range rdfs:Resource .