<http://webisa.webdatacommons.org/prov/246338384>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/174190690> .
<http://webisa.webdatacommons.org/174190690>	<http://www.w3.org/ns/prov#value>	"While some risk factors for premature birth are well-known ??? chronic health problems in the mother, the presence of twins or triplets, the use of alcohol, cigarettes, or other drugs ??? the causes of this devastating problem are not fully understood." .
<http://webisa.webdatacommons.org/prov/147986407>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/174190690> .
<http://webisa.webdatacommons.org/174190690>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/174190690>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<citylab.com> .