student Fred Sample blond
student Joe Blow brown
student Sally Silly green
student Alfred Merriweather yellow
student Sam Sleepy purple
student Jerry Johnson orange

hair Jerry Johnson red

course CS 70 TT 1:15 45
course CS 134 MW 2:45 3
course MATH 55 MTWTF 8:00 7
course HUM 13 MTWTF 9:00 10
course HUM 22 MTWTF 10:00 5
course PHYS 19 MTTF 11:00 5
course CHEM 1 M 4:00 5

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enroll Fred Sample CS 70
enroll Joe Blow CS 70
enroll Sally Silly CS 134
enroll Alfred Merriweather CS 134
enroll Jerry Johnson CS 134
enroll Sally Silly CS 134

enroll Fred Sample HUM 13
enroll Fred Sample HUM 22
enroll Fred Sample MATH 55
enroll Fred Sample CS 134
enroll Fred Sample PHYS 19
enroll Fred Sample

drop Fred Sample PHYS 19
enroll Fred Sample CHEM 1

hair Fred Simple
drop Fred Sample PHY 19

time CHEM 1 TT 3:00

student Fred Sample blond
course CS 70 TT 1:15 45

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