Add not working bi-9 query
+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 sn: <http://www.ldbc.eu/ldbc_socialnet/1.0/data/>
+PREFIX snvoc: <http://www.ldbc.eu/ldbc_socialnet/1.0/vocabulary/>
+PREFIX sntag: <http://www.ldbc.eu/ldbc_socialnet/1.0/tag/>
+PREFIX foaf: <http://xmlns.com/foaf/0.1/>
+PREFIX dbpedia: <http://dbpedia.org/resource/>
+PREFIX dbpedia-owl: <http://dbpedia.org/ontology/>
+
+SELECT ?forum (COUNT(?post1) as ?count1) (COUNT(?post2) as ?count2)
+WHERE
+{
+ #BIND (500 as ?treshold)
+ BIND ("TennisPlayer" as ?tagClassName1)
+ BIND ("President" as ?tagClassName2)
+ ?tag1 a ?tagClass1 .
+ ?tagClass1 rdfs:label ?tagClassName1 .
+ ?tag2 a ?tagClass2 .
+ ?tagClass2 rdfs:label ?tagClassName2 .
+ ?post1 a snvoc:Post .
+ ?post1 snvoc:hasTag ?tag1 .
+ ?post2 a snvoc:Post .
+ ?post2 snvoc:hasTag ?tag2 .
+ ?forum snvoc:containerOf ?post1 .
+ ?forum snvoc:containerOf ?post2 .
+ ?forum snvoc:hasMember/snvoc:hasPerson ?person .
+
+}
+GROUP BY ?forum
+HAVING (?count1 > 0 && ?count2 > 0 && COUNT(?person) > 200)
+ORDER BY DESC(ABS(?count2 - ?count1)) ?forum
+LIMIT 100
+
