Question: what was the book wealth of nations about
[{'answer': "what builds nations ' wealth", 'provenance': [{'wikipedia_id': '725991', 'title': 'The Wealth of Nations', 'start_paragraph_id': 1, 'start_character': 305, 'end_paragraph_id': 1, 'end_character': 333, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '725991', 'title': 'The Wealth of Nations', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 567, 'bleu_score': 0.978606533029418, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8540441931318189104}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '725991', 'title': 'The Wealth of Nations', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['An Inquiry into the Nature and Causes of the Wealth of Nations, generally referred to by its shortened title The Wealth of Nations, is the "magnum opus" of the Scottish economist and moral philosopher Adam Smith. First published in 1776, the book offers one of the world\'s first collected descriptions of what builds nations\' wealth, and is today a fundamental work in classical economics.', 'An Inquiry into the Nature and Causes of the Wealth of Nations, generally referred to by its shortened title The Wealth of Nations, is the "magnum opus" of the Scottish economist and moral philosopher Adam Smith. First published in 1776, the book offers one of the world\'s first collected descriptions of what builds nations\' wealth, and is today a fundamental work in classical economics. By reflecting upon the economics at the beginning of the Industrial Revolution, the book touches upon such broad topics as the division of labour, productivity, and free markets.', 'An Inquiry into the Nature and Causes of the Wealth of Nations, generally referred to by its shortened title The Wealth of Nations, is the "magnum opus" of the Scottish economist and moral philosopher Adam Smith. First published in 1776, the book offers one of the world\'s first collected descriptions of what builds nations\' wealth, and is today a fundamental work in classical economics. By reflecting upon the economics at the beginning of the Industrial Revolution, the book touches upon such broad topics as the division of labour, productivity, and free markets.']}}]}, {'provenance': [{'wikipedia_id': '31379192', 'title': 'The Next Hundred Million', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The Next Hundred Million: America in 2050 is a non-fiction book by American economist and demographer Joel Kotkin. The author outlines a world in which the growing US population reaches four hundred million by 2050. He argues that the US will become more diverse (with a trend towards ethnic/racial mixing) and more competitive, and he predicts that the US will experience continual economic growth that advances the populations\' standard of living. Kotkin writes that the US "should emerge by mid-century as the most affluent, culturally rich and successful nation in human history".', 'The Next Hundred Million: America in 2050 is a non-fiction book by American economist and demographer Joel Kotkin. The author outlines a world in which the growing US population reaches four hundred million by 2050. He argues that the US will become more diverse (with a trend towards ethnic/racial mixing) and more competitive, and he predicts that the US will experience continual economic growth that advances the populations\' standard of living. Kotkin writes that the US "should emerge by mid-century as the most affluent, culturally rich and successful nation in human history".']}}]}, {'provenance': [{'wikipedia_id': '725991', 'title': 'The Wealth of Nations', 'section': 'Section::::Reception and impact.:United States.\n', 'start_paragraph_id': 99, 'end_paragraph_id': 99, 'meta': {'evidence_span': [', Adam Smith was working for Townshend and developed a relationship with Benjamin Franklin, who played a vital role in the United States\' independence three months after Smith\'s "The Wealth of Nations" book was released. James Madison, in a speech given in Congress on 2 February 1791, cited "The Wealth of Nations" in opposing a national bank: "The principal disadvantages consisted in, 1st. banishing the precious metals, by substituting another medium to perform their office: This effect was inevitable. It was admitted by the most enlightened patrons of banks, particularly by Smith on the "Wealth of Nations"." Thomas Jefferson, writing to John Norvell on 14 June 1807, claimed that on "the subjects of money & commerce, Smith\'s "Wealth of Nations" is the best book to be read, unless "Say\'s Political Economy" can be had, which treats the same subject on the same principles, but in a shorter compass & more lucid manner."', 'time, Adam Smith was working for Townshend and developed a relationship with Benjamin Franklin, who played a vital role in the United States\' independence three months after Smith\'s "The Wealth of Nations" book was released. James Madison, in a speech given in Congress on 2 February 1791, cited "The Wealth of Nations" in opposing a national bank: "The principal disadvantages consisted in, 1st. banishing the precious metals, by substituting another medium to perform their office: This effect was inevitable. It was admitted by the most enlightened patrons of banks, particularly by Smith on the "Wealth of Nations"." Thomas Jefferson, writing to John Norvell on 14 June 1807, claimed that on "the subjects of money & commerce, Smith\'s "Wealth of Nations" is the best book to be read, unless "Say\'s Political Economy" can be had, which treats the same subject on the same principles, but in a shorter compass & more lucid manner."']}}]}]