Chinastark/bird_dataset huggingface dataset:
Column: course_id
Name: course id
Data format: integer
Description: the id of courses
Column: student_id
Name: student id
Data format: integer
Description: the id of students
Column: grade
Data format: text
Description: the grades that the students acquire in this course
Value description: commonsense evidence:
 A: excellent -- 4
 B: good -- 3
 C: fair -- 2
 D: poorly pass -- 1
 null or empty: this student fails to pass this course
 gpa of students for this semester = sum (credits x grade) / sum (credits)
Column: sat
Name: satisfying degree
Data format: integer
Description: student satisfaction with the course