_:b57831920	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/15f8e9d78f2649ff640677a38cbe17617dee3e91/1> .
_:b57831921	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57831920	<http://www.w3.org/ns/oa#hasSelector>	_:b57831921 .
_:b57831921	<http://www.w3.org/ns/oa#exact>	"CD4" .