MB artists have beginarea as specific city (London, Birmingham) and
area as country (United Kingdom), never the subdivision (England).
Now the Lucene query includes the country: tag:"heavy metal" AND
(beginarea:"England" OR area:"England" OR area:"United Kingdom").
This finds all UK heavy metal artists instead of just the 9 that
literally have "England" as their area.
vicrodh
84bb4f387c