_:b56712137	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56712136	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/820b50e46327c709f1f529014dfff7cfd2733391/0> .
_:b56712137	<http://www.w3.org/ns/oa#exact>	"serum" .
_:b56712136	<http://www.w3.org/ns/oa#hasSelector>	_:b56712137 .