_:b57364837	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57364836	<http://www.w3.org/ns/oa#hasSelector>	_:b57364837 .
_:b57364836	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/c6c38b432c6caac88df6fe86ca3b68ab68d2d374/18> .
_:b57364837	<http://www.w3.org/ns/oa#exact>	"improvement" .