So you think you can tell
Heaven from hell,
bue skies from pain...
Can you tell a green field
from a cold steel rail?
A smile for the veil?
Do you think you can tell?

Think of the meaning and imagery each of those examples immediately brings to mind. especially that last one...."A smile for the veil", the idea being that she's only pretending to be happy in pictures and appearances and such for the ability to get married (probably for financial, non-loving reasons itself)

And that's just one line from the stanza

no other stanza in songwriting is more densely packed with meaning while still flowing musically as well