How do I get the referring entity of a referenced node in a template file?
You can get the "relationships" to your referencing node in a preprocess function, in your theme's mytheme.theme file:

function mytheme_preprocess_node(&amp;$variables) {
  if (!empty($variables['node'])) {
    $node = $variables['node'];
    if ($node-&gt;getType() === 'article') {

      // Get the review by article node id.
      $review = \Drupal::entityQuery('node')
        -&gt;condition('type', 'review')
        -&gt;condition('field_article', $node-&gt;id())
        -&gt;execute();

      // Get release by review node id.
      $release = \Drupal::entityQuery('node')
        -&gt;condition('type', 'release')
        -&gt;condition('field_review', array_pop($review))
        -&gt;execute();

      // Load release node and store in variables.
      $variables['release'] = Node::load(array_values($release)[0]);
    }
  }
}


Then you can access the fields in your template:

{{ release.field_name.value }}