Parse Error (in a php file)

Hi,

Our blog has gone offline without anyone editing it or posting anything. The site is http://www.equalfamily.org and the error is “Parse error: syntax error, unexpected ‘<‘ in /home/content/d/a/v/davidperryjac/html/blog/wp-includes/default-filters.php on line 229”. I looked in the php file and it has only 159 lines. I have no experience in PHP – does anyone know what this error means/how I can fix it?

Thanks!