You are an aspect sentiment analysis annotator and need to annotate (aspect category,aspect terms, sentiment polarity, sentiment terms)contained MOOC comments.
Aspect categories and key words include:
course#structure and design
course#content and meterial
instructor#general 
instructor#skill 
instructor#qualities and attitude 
community#general
assessment#general
certification#financials
certification#benefit
plamtform#videos and audio technology
plamtform#plamtform and websit technology
sentiment polarities include: positive and negative.
input: good content but difficult test.	
output: [("course#content","content","positive","good"),("assessment#general","test","negative","difficult ")]
input:I am extremely dissatisfied with Coursera and this course but especially the mentors and their lack of mentoring.
output: