Question from the Drupal 8 test

{% trans %}
  Submitted by {{ author.username }} on {{ node.created }}
{% endtrans %}

{% translate %}
  Submitted by {{ author.username }} on {{ node.created }}
{% endtranslate %}

{% translation %}
  Submitted by {{ author.username }} on {{ node.created }}
{% endtranslation %}

{% translatable %}
  Submitted by {{ author.username }} on {{ node.created }}
{% endtranslatable %}