[{"observed_at":"2026-09-07 16:32:52.980031+00:00","run_id":"20260907T155543-ce3781c4","source_review_id":"UmF0aW5nLTI1MTczOTk1","source_instructor_id":"rmp:2003430","instructor_name":"Jessica Lin","course_label":"MATH519","course_id":"MATH 519","course_uid":"course_cdda28fe1e1896676250b6f8","review_date":"2015-09-05 16:03:34 +0000 UTC","comment":"Worst professor I have ever had up to my junior year in UW-Madison. I doubt Lin's professionalism. She got impatient when I asked her to explain something again because I did not understand her explanation the first time. It was so awkward and uncomfortable to go to her office hours. ","source_url":"https://www.ratemyprofessors.com/professor/2003430","quality_rating":2.0,"difficulty_rating":5.0}]