Error parsing XML document

http://www.google.com/:1: parser error : Content error in the external subset
<!doctype html><html itemscope="" itemtype="http://schema.org/WebPage" lang="no"
^
http://www.google.com/:1: parser error : Content error in the external subset
<!doctype html><html itemscope="" itemtype="http://schema.org/WebPage" lang="no"
^