There are good conductors that are magnetic (iron) and good conductors that are nonmagnetic (copper).
(good conductors; are; magnetic (iron) and good conductors that are nonmagnetic (copper)) (magnetic (iron) and good conductors; are; nonmagnetic (copper)
good conductors magnetic (iron) and good conductors
are are
magnetic (iron) and good conductors that are nonmagnetic (copper)
nonmagnetic (copper