title: Multiple DbGeography classes exists, which one is correct?
body: <p>There's 2 <code>DbGeography</code> classes with these namespaces:</p>
  
  <pre><code>System.Data.Entity.Spatial.DbGeography    (Entity Framework)
  System.Data.Spatial.DbGeograph            (.Net Framework)
  </code></pre>
  
  <p>which one should I use?</p>