title: Entity framework - remove related records by id
body: <p>Okay. assume I have structure:</p>
  
  <blockquote>
    <p>School -> students -> StudentParents &lt;- parents -> address</p>
  </blockquote>
  
  <p>School can have many students, students can be relatives and have the same set of parents (may-to-many). Each parent can have multiple addresses.<br>
  <em>Assume that students who have the same set of parents cannot study in different schools.</em></p>
  
  <p>If given school_Id =5, I want to remove this school and all related records.
  How to do this easily in Entity Framework 4?</p>