About: http://webisa.webdatacommons.org/327303598

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	Then, at the age of 50, they took standard tests of memory, attention and other cognitive abilities.Overall, the study found, there was no evidence that current or past drug users had poorer mental performance.
http://www.w3.org/ns/prov#wasQuotedFrom	taipeitimes.com