<http://webisa.webdatacommons.org/prov/447723296>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/327509476> .
<http://webisa.webdatacommons.org/327509476>	<http://www.w3.org/ns/prov#value>	"Whether this vaccine's efficacy is enough for countries to invest in is a question for economists.Advertisement Researchers tracked the children in the new study, including those who got the fake shot, for about two years and noted side effects and other health problems following the vaccine." .
<http://webisa.webdatacommons.org/327509476>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<denverpost.com> .
<http://webisa.webdatacommons.org/327509476>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .