Is this result of a sitemap?

[Lilyz]

when the search engine return results in following format, is it the result of having a sitemap? IF not what is it?

website name {{ Name}}
Site description ...
SiteName.com/ - 7k - Cached - Similar pages
category1 - www.SiteName.com/cat1.php
category2 - www.SiteName.com/cat2.php
category3 - www.SiteName.com/cat3.php
More results from SiteName.com »


Thanks

[sarahk]

No, it'll be because the site is an authority with high traffic and qualifies for extended space in the results. I don't know how you tip your site to be there though.