Assertion: increased pollution | /r/HasProperty | derived to many causes
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Source sentences:
text: According the report the sub-Saharan Africa is experiencing a fast increasing pollution, derived to many causes, such as burning wood for cooking, burning open waste, traffic, agri-food and chemical industries, the sand dust from the Sahara carried by the winds through the Sahel area, all this reinforced by a greater demography and urban density.