_:b56219124	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/8931a667486c19e796f098e775023957fbc14219/0> .
_:b56219124	<http://www.w3.org/ns/oa#hasSelector>	_:b56219125 .
_:b56219125	<http://www.w3.org/ns/oa#exact>	"PCR" .
_:b56219125	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .