<http://webisa.webdatacommons.org/87347781>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/87347781>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<un.org> .
<http://webisa.webdatacommons.org/prov/103795932>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/87347781> .
<http://webisa.webdatacommons.org/87347781>	<http://www.w3.org/ns/prov#value>	"Firstly, the real situation of fertilizer application in farmlands for more efficient nutrient management ('98~) has been investigated, and the amounts and kinds of chemical and organic fertilizers applied were studied." .