PREFIX pubann:<http://pubannotation.org/ontology/>
SELECT ?gene (COUNT(?gene) AS ?count)
WHERE {
	GRAPH prj:Preeclampsia {
	 	?o1 tao:denoted_by ?s1 .
	}

	GRAPH prj:preeclampsia_genes {
	 	?o2 tao:denoted_by ?s2 .
      	?o2 a ?gene .
      	FILTER (?gene != tao:Context_entity)
	}

	?o3 tao:denoted_by ?s3 .
  	?o3 a pubann:Sentence .
    ?s3 tao:contains ?s1 .
    ?s3 tao:contains ?s2 .
}
GROUP BY ?gene
ORDER BY DESC(?count)