What is the importance to the rhyme "Oranges and Lemons" in 1984?

Oranges and Lemons connectswith Charrington, OBrien, and, rather unexpectedly, , each
of whom supplies him with some of the words. It seems appropriate that OBrien should complete
the eighteenth-century rhyme, as he reminds Winston of an eighteenth-century nobleman, with his
charm of manner and incongruously civilized appearance.

In Ray Bradburys
Fahrenheit 451, another book-burning dystopia, a group of dissidents manage
to assemble a human library, having memorized some of the great books of the Western canon. The
Party in Nineteen Eighty-Four has effectively censored great works of
literature by translating them into Newspeak versions, but it seems to have wiped out
traditional popular verse, such as nursery rhymes, so thoroughly that several people are needed
(at least two of them, ironically, undercover agents of the Party) to piece together a very
brief rhyme. It is a furtherthat Winston spends so much time trying to recover these fragments
of the past...