title: What is the library name needed to use JObject?
body: <p>I need to use JObject.</p>
  
  <p>The question is where i can find dll for this case and what must to appear in using
  i want to write something like:</p>
  
  <pre><code>JObject obj = (JObject)JsonConvert.DeserializeObject(s);
  </code></pre>