I am trying the following
ContourIntegrate[1/z, z \[Element] Circle[]]
copied from the documentation into the web-based interface https://www.wolframalpha.com/input?i2d=true&i=ContourIntegrate%5BDivide%5B1%2Cz%5D%2C+z+%5C%5C%2891%29Element%5C%2893%29+Circle%5C%2891%29%5C%2893%29%5D
And the interface is unable to recognize the input. 
Am I missing something obvious here?
Venkat.
