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<http://webisa.webdatacommons.org/419475357>	<http://www.w3.org/ns/prov#value>	"Aug 23, 2011 2:08 PM Medical Field advances have allowed the NFL and other organizations to understand what is happening to a human body that plays football much better then 20 years ago." .
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<http://webisa.webdatacommons.org/419475357>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nbcsports.com> .