_:b57931820	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/ad2e3ed0f9808a4328254f16461c9f82bde76294/2> .
_:b57931821	<http://www.w3.org/ns/oa#exact>	"serum" .
_:b57931820	<http://www.w3.org/ns/oa#hasSelector>	_:b57931821 .
_:b57931821	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .