(select
 (filter
  (leftjoin
   (leftjoin
    (bgp
      (triple ?:person <http://xmlns.com/foaf/0.1/nick> ?:nick))
    (bgp
      (triple ?:person <http://xmlns.com/foaf/0.1/isPrimaryTopicOf> ?:page)))
   (join
    (bgp
      (triple ?:person <http://xmlns.com/foaf/0.1/name> ?:name))
    (union
     (bgp
       (triple ?:person <http://xmlns.com/foaf/0.1/depiction> ?:img))
     (bgp
       (triple ?:person <http://xmlns.com/foaf/0.1/firstName> ?:firstN)))))
  (|\|\|| (bound ?:page) (|\|\|| (bound ?:firstN) (bound ?:img))))
 (?:person ?:nick ?:page ?:img ?:name ?:firstN))