Bora draft - Quarry

SQL

set @en = "Mayors of places in the United_States";
set @he = "ראשי ערים בארצות הברית";

use enwiki_p;
set @s = replace(@en, " ", "_");
set @t = replace(@he, " ", "_");
select ll_title as "שם" from page inner join langlinks
on page_namespace = 0
and exists
(select * from categorylinks
 where cl_from = page_id
 and (cl_to = @s
      or exists
      (select * from page as p1
       where p1.page_title = cl_to
       and p1.page_namespace = 14
       and exists
       (select * from categorylinks as c1
        where c1.cl_from = p1.page_id
        and (c1.cl_to = @s
             or exists
             (select * from page as p2
              where p2.page_title = c1.cl_to
              and p2.page_namespace = 14
              and exists
              (select * from categorylinks as c2
               where c2.cl_from = p2.page_id
               and c2.cl_to = @s)))))))
and page_id = ll_from
and ll_lang = "he"
and exists
(select * from hewiki_p.page as p3
 where p3.page_namespace = 0
 and p3.page_title = replace(ll_title, " ", "_")
 and not exists
 (select * from hewiki_p.categorylinks as c3
  where c3.cl_from = p3.page_id
  and c3.cl_to = @t))
SQL

Checking query status...
