add further classes to ignore and add limit

services/about-marcus/queries/quantity.query

 SELECT ?label (COUNT(?class) AS ?total) WHERE {
 GRAPH <urn:x-arq:UnionGraph>  {
 ?s a ?class .
-FILTER (?class NOT IN ( ubbont:DigitalResource , ubbont:Page , ore:Aggregation))
+FILTER (?class NOT IN ( ubbont:DigitalResource , ubbont:Page , ore:Aggregation owl:DatatypeProperty, owl:ObjectProperty, owl:FunctionalProperty, rdfs:Class, owl:Class))
 ?class rdfs:label ?label .
 FILTER(LANG(?label) = "").
 
@@ -10,3 +10,4 @@ FILTER(LANG(?label) = "").
 GROUP BY ?label
 HAVING (COUNT(?class) > 1)
 ORDER BY desc(?total)
+LIMIT 50