About: http://webisa.webdatacommons.org/373479988

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	He mentioned rigorous mental activity (through bridge, crossword puzzles and other games) as typical of the lucid elderly ??? though cause and effect are hardly definitive.
http://www.w3.org/ns/prov#wasQuotedFrom	northwestern.edu