Student = ( ( 1, "Bill", 'A' ), ( 2, "Sarah", 'B' ), ( 3, "Sally", 'C' ) )
Subject = ( ( 345, "Science" ), ( 201, "History" ), ( 387, "Music" ) )
Enrollment = ( ( 1, 345 ), ( 2, 345 ), ( 3, 201 ), ( 3, 345 ), ( 2, 201 ), ( 1, 201 ), ( 2, 387 ) )
for e in Enrollment:
for st in Student:
if st[0] == e[0]: print( st[1], st[2], end=' ' )
for sub in Subject:
if sub[0] == e[1]: print( sub[1] )