title: 'title'<br>
question: 'question'<br>
comments: Array<br>
  0: Object<br>
     user: ObjectId ("user id"<br>
     comment: "string"<br>
  1: Object<br>
     user: ObjectId ("user id")<br>
     comment: "string"<br>
open: true

{% if question.open == true and question.responses|selectattr('user', 'equalto', 'current_user.id')|list|length == 1%}