title: Basic Tree Concept: Defining ancestors
body: <p><img src="https://i.stack.imgur.com/S9Ukw.gif" alt="enter image description here"></p>
  
  <p>What defines an ancestor? More specifically, would E be an ancestor to H? Or is it more simply that F,C,A are ancestors to H? Maybe even G? I would just like to clear up this simple concept.</p>