_:b57253640	<http://www.w3.org/ns/oa#hasSelector>	_:b57253641 .
_:b57253641	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57253641	<http://www.w3.org/ns/oa#exact>	"serum" .
_:b57253640	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/14d3c2c1c254df91ee7c9a24625494d39774b8c4/0> .