About: http://webisa.webdatacommons.org/406100249

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	The economic effects come primarily from invaders, like the Russian wheat aphid, that attack crops; parasitic plants like witch weed, which now affect corn farmers; or weeds, such as thistles, that invade cropland.
http://www.w3.org/ns/prov#wasQuotedFrom	sciencedaily.com