Simplify the following text for a Grade 10 native English-speaking person.
Original: The circular arrangement depends on enharmonic relationships in the circle , usually reckoned at six sharps or flats for the major keys of F = G and D = E for minor keys ( Drabkin 2001 ) .
Simplified: The circle depends on enharmonic relationships in the circle , which is six sharps or flats for the major keys of F = G and D = E for minor keys ( Drabkin 2001 ) .