Question: What year did the person who described poets as the unacknowledged legislators of mankind die?

full_context: Document 1: Mary Shelley: Mary Shelley was born Mary Wollstonecraft Godwin in Somers Town, London, in 1797. She was the second child of the feminist philosopher, educator, and writer Mary Wollstonecraft, and the first child of the philosopher, novelist, and journalist William Godwin. Wollstonecraft died of puerperal fever shortly after Mary was born. Godwin was left to bring up Mary, along with her older half-sister, Fanny Imlay, Wollstonecraft's child by the American speculator Gilbert Imlay. A year after Wollstonecraft's death, Godwin published his "Memoirs of the Author of A Vindication of the Rights of Woman" (1798), which he intended as a sincere and compassionate tribute. However, because the "Memoirs" revealed Wollstonecraft's affairs and her illegitimate child, they were seen as shocking. Mary Godwin read these memoirs and her mother's books, and was brought up to cherish her mother's memory.
Document 2: Prometheus Unbound (Shelley): Prometheus Unbound is a four-act lyrical drama by Percy Bysshe Shelley, first published in 1820. It is concerned with the torments of the Greek mythological figure Prometheus, who defies the gods and gives fire to humanity, for which he is subjected to eternal punishment and suffering at the hands of Zeus. It is inspired by the classical "Prometheia", a trilogy of plays attributed to Aeschylus. Shelley's play concerns Prometheus' release from captivity, but unlike Aeschylus' version, there is no reconciliation between Prometheus and Jupiter (Zeus). Instead, Jupiter is abandoned by his supportive elements and falls from power, which allows Prometheus to be released.
Document 3: The Cloud (poem): "The Cloud" is a major 1820 poem written by Percy Bysshe Shelley. "The Cloud" was written during late 1819 or early 1820, and submitted for publication on 12 July 1820. The work was published in the 1820 collection "Prometheus Unbound, A Lyrical Drama, in Four Acts, With Other Poems" by Charles and James Ollier in London in August 1820. The work was proof-read by John Gisborne. There were multiple drafts of the poem. The poem consists of six stanzas in anapestic or antidactylus meter, a foot with two unaccented syllables followed by an accented syllable.
Document 4: Age of Enlightenment: The influence of science also began appearing more commonly in poetry and literature during the Enlightenment. Some poetry became infused with scientific metaphor and imagery, while other poems were written directly about scientific topics. Sir Richard Blackmore committed the Newtonian system to verse in Creation, a Philosophical Poem in Seven Books (1712). After Newton's death in 1727, poems were composed in his honour for decades. James Thomson (1700–1748) penned his "Poem to the Memory of Newton," which mourned the loss of Newton, but also praised his science and legacy.
Document 5: Adonais: Shelley regarded Adonais as the ``least imperfect ''of his works. In a 5 June 1821 letter to John and Maria Gisborne, Shelley wrote about the work:`` It is a highly wrought piece of art, perhaps better in point of composition than anything I have written.''
Document 6: Preface to the Lyrical Ballads: The Preface to the Lyrical Ballads is an essay, composed by William Wordsworth, for the second edition (published in January 1801, and often referred to as the ``1800 Edition '') of the poetry collection Lyrical Ballads, and then greatly expanded in the third edition of 1802. It has come to be seen as a de facto manifesto of the Romantic movement.
Document 7: A Defence of Poetry: ``A Defence of Poetry ''is an essay by the English poet Percy Bysshe Shelley, written in 1821 and first published posthumously in 1840 in Essays, Letters from Abroad, Translations and Fragments by Edward Moxon in London. It contains Shelley's famous claim that`` poets are the unacknowledged legislators of the world''.
Document 8: A Philosophical View of Reform: A Philosophical View of Reform is a major prose work by Percy Bysshe Shelley written in 1819-20 and first published in 1920 by Oxford University Press. The political essay is Shelley's longest prose work.
Document 9: Percy Bysshe Shelley: Percy Bysshe Shelley ( ; 4 August 17928 July 1822) was one of the major English Romantic poets, who is regarded by some as among the finest lyric and philosophical poets in the English language, and one of the most influential. A radical in his poetry as well as in his political and social views, Shelley did not see fame during his lifetime, but recognition of his achievements in poetry grew steadily following his death. Shelley was a key member of a close circle of visionary poets and writers that included Lord Byron, John Keats, Leigh Hunt, Thomas Love Peacock and his own second wife, Mary Shelley, the author of "Frankenstein".
Document 10: Ode (poem): Ode is a poem written by the English poet Arthur O'Shaughnessy and first published in 1873. It is often referred to by its first line We are the music makers.
Document 11: Claire Clairmont: Clara Mary Jane Clairmont (27 April 1798 – 19 March 1879), or Claire Clairmont as she was commonly known, was the stepsister of writer Mary Shelley and the mother of Lord Byron's daughter Allegra. She is thought to be the subject of a poem by Percy Bysshe Shelley.
Document 12: Essay of Dramatick Poesie: Essay of Dramatic Poesy by John Dryden was published in 1668. It was probably written during the plague year of 1666. Dryden takes up the subject that Philip Sidney had set forth in his Defence of Poesie (1580) and attempts to justify drama as a legitimate form of ``poetry ''comparable to the epic, as well as defend English drama against that of the ancients and the French.
Document 13: Ode to the West Wind: "Ode to the West Wind" is an ode, written by Percy Bysshe Shelley in 1819 near Florence, Italy. It was originally published in 1820 by Charles in London as part of the collection "Prometheus Unbound, A Lyrical Drama in Four Acts, With Other Poems". Perhaps more than anything else, Shelley wanted his message of reform and revolution spread, and the wind becomes the trope for spreading the word of change through the poet-prophet figure. Some also believe that the poem was written in response to the loss of his son, William (born to Mary Shelley) in 1819. The ensuing pain influenced Shelley. The poem allegorises the role of the poet as the voice of change and revolution. At the time of composing this poem, Shelley without doubt had the Peterloo Massacre of August 1819 in mind. His other poems written at the same time—"The Masque of Anarchy", "Prometheus Unbound", and "England in 1819"—take up these same themes of political change, revolution, and role of the poet.
Document 14: A Defence of Poetry: "A Defence of Poetry" is an essay by the English poet Percy Bysshe Shelley, written in 1821 and first published posthumously in 1840 in "Essays, Letters from Abroad, Translations and Fragments" by Edward Moxon in London. It contains Shelley's famous claim that "poets are the unacknowledged legislators of the world".
Document 15: Julian and Maddalo: Julian and Maddalo: A Conversation (1818–19) is a poem in 617 lines of enjambed heroic couplets by Percy Bysshe Shelley published posthumously in 1824.
ground_truth: 8 July 1822
sub_queries: who described poets as the unacknowledged legislators of mankind Answer: Percy Bysshe Shelley
The year Percy Bysshe Shelley died was what? Answer: 8 July 1822