<http://webisa.webdatacommons.org/346842391>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/461742046>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/346842391> .
<http://webisa.webdatacommons.org/346842391>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<what-when-how.com> .
<http://webisa.webdatacommons.org/prov/461272073>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/346842391> .
<http://webisa.webdatacommons.org/346842391>	<http://www.w3.org/ns/prov#value>	"As mortality declines, couples may perceive that they can control the survival of family members by changing health and living practices such as cleanliness and diet." .