public void ShowAnswer()
{
AnswerVisibility = Visibility.Visible;
UpdateEditAnswerButtonVisibilities();
HidingAnswer = false;
_DateTimeAnswerShown = DateTime.Now;
var duration = _DateTimeAnswerShown - _DateTimeQuestionShown;
HistoryPublisher.Ton.PublishEvent(new ViewedPhraseOnScreenEvent(Question, duration));
HistoryPublisher.Ton.PublishEvent(new ViewingPhraseOnScreenEvent(Answer));
HistoryPublisher.Ton.PublishEvent(new ViewedPhraseOnScreenEvent(Answer, duration));
}