A well-known edtech firm conducted a survey of its learners to understand their opinion about a particular course, and it gathered data on five questions. The questions and the response parameters are given here:

a. How would you rate the quality of the course's content?

b. How did you find the interactiveness of the course material?

c. Would you recommend the course to a friend?

d. Tell us one thing that you would like improved in the course.

e. How would you rate the course content delivery?

Questions a, b, and e were supposed to be answered on a scale of 1 (lowest score/rating) to 5 (highest score/rating); question c was supposed to be answered as a yes or no; and the answer to question d was supposed to be answered in words.

Please categorize the answers to the questions as structured and unstructured.