def check_question_update_data(json):
    """
    Check if there is data about questions present in the statement.

    :param json: A quiz edit page viewed statement.
    :type json: dict(str, NoneType)
    :return: A boolean, true if there is data about questions, false otherwise.
    :rtype: bool
    """
    statement = json['statement']['context']['extensions']['http://activitystrea.ms/schema/1.0/question']
    check_question_data = (len(statement) != 0)
    return check_question_data