title: R programming xmlTreeParse XML content does not seem to be XML
body: <p>I use R to parse the xml <a href="https://d396qusza40orc.cloudfront.net/getdata%2Fdata%2Frestaurants.xml" rel="nofollow">https://d396qusza40orc.cloudfront.net/getdata%2Fdata%2Frestaurants.xml</a>. This xml exists, but R remind me that it does not seem to be XML.</p>