How many questions did user No.5 answer?
user No.5 refers to userID = 5
SELECT COUNT(QuestionID) FROM Answer WHERE UserID = 5
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, 
