_:b56524320	<http://www.w3.org/ns/oa#hasSelector>	_:b56524321 .
_:b56524321	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56524321	<http://www.w3.org/ns/oa#exact>	"serum" .
_:b56524320	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/83cfd4e4f2ba744bccc85d7da2fe54157ee19136/3> .