_:b57159924	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/3069b74346026680f8b9d9d918edbb9ce425f809/3> .
_:b57159925	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57159924	<http://www.w3.org/ns/oa#hasSelector>	_:b57159925 .
_:b57159925	<http://www.w3.org/ns/oa#exact>	"serum" .