title: _set in Django for a queryset
body: <p>I'm a bit confused how to use <code>_set</code> in a <code>QuerySet</code> in Django. For example, an object Blog <code>b</code>, and the object <code>Entry</code> related by the attribute <code>entry_set</code>. What is the meaning of <code>b.entry_set.all()</code>?</p>
  
  <p>I would appreciate if someone could use this example to display the possible output.</p>