_:b57816220	<http://www.w3.org/ns/oa#hasSelector>	_:b57816221 .
_:b57816220	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/2f3dfdf4e0f46d6e298cff8132516cfa30cfda8b/1> .
_:b57816221	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57816221	<http://www.w3.org/ns/oa#exact>	"mechanical thrombectomies" .