About: http://webisa.webdatacommons.org/190513467

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Soot and other particles in the air are also thought to be blocking sunlight, reducing photosynthesis and lowering crop yields.
http://www.w3.org/ns/prov#wasQuotedFrom	iisd.ca