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      "text": "UNEP's 2019 review found Beijing's fine particulate pollution fell by 35% between 2013 and the end of 2017, and by 25% in the surrounding Beijing-Tianjin-Hebei region",
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      "text": "the latest source apportionment puts 57% of Beijing's PM2.5 on regional transport and the remaining 43% on local sources, led by vehicle and residential emissions",
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