<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"> <head><script data-ad-client="pub-4443322968891229" async src="https://pagead2.googlesyndication.com/ pagead/js/adsbygoogle.js"></script> <meta http-equiv="content-type" content="application/xhtml+xml; charset=UTF-8" /> <title>Hello, World!</title> </head> <body> <p>Hello, World!</p> </body> </html>