Please list all the answers to the question "Any additional notes or comments" that are not null in 2014's survey.
question refers to questiontext; the answers that are not null refers to AnswerText ! = -1

SELECT T2.AnswerText FROM Question AS T1 INNER JOIN Answer AS T2 ON T1.questionid = T2.QuestionID WHERE T1.questiontext = 'Any additional notes or comments' AND T2.SurveyID = 2014 AND T2.AnswerText <> -1
database name:db_id mental_health_survey
Question table Question Cols: question text dtype text, question id dtype integer, 
Survey table Survey Cols: Survey ID dtype integer, Description dtype text, 
Answer table Answer Cols: Answer Text dtype text, Survey ID dtype integer, User ID dtype integer, Question ID dtype integer, 
