| http://www.w3.org/ns/prov#value | - Overwhelmed by population growth, the developing world's cities have been unable to provide sufficient basic services. 220 million people, or 13% of the world's urban population, have no access to clean drinking water; 26% lack access to even simple latrines. 1/2 of the solid waste goes uncollected, leading to a range of water-borne diseases and diseases such as malaria and dengue fever, from whic
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