Read the provided MOOC comments carefully.
Identify the aspects of the courses mentioned in the comments, and classify them into the following categories using the provided keywords:
Course structure (course organization, course objective, course pace)
Course content (Real-life scenarios, relevant examples, up-to-date, easy-to-understand, problem-solving focus, hints, real-world cases)
Instructor (Instructor knowledge, enthusiasm for teaching, humor, presentation)
Interaction (Peer feedback, forum support, forum help, instructor feedback)
Assessment (Quiz, project, exercise, test, lab activities, grading)
Determine the sentiment polarity (positive or negative) of each comment towards the identified aspects.
Identify the aspect term and sentiment term for each aspect and sentiment polarity pair.
Provide the extracted ABSA information in the following format: (Aspect Category, Sentiment Polarity, Aspect Term, Sentiment Term)
input: "content is good，but test is difficult"
output: [(Aspect Category: course content, Sentiment Polarity: positive, aspect term: content, Sentiment Term: good),(Aspect Category: Assessment, Sentiment Polarity: negative, aspect term:test, Sentiment Term: difficult)]
input：Lectures were well planned and teaches the relevant topics very interactively.But if there is a tutorial class it would be better.