title: What is the difference between Polygon.contains and Polygon.within?
body: <p>The Docstring says:</p>
  
  <p><code>Polygon.contains</code> Returns True if the geometry contains the other, else False</p>
  
  <p><code>Polygon.within</code> Returns True if geometry is within the other, else False</p>
  
  <p>How are they different?</p>