_:b57239304	<http://www.w3.org/ns/oa#hasSelector>	_:b57239305 .
_:b57239305	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57239304	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/f8040dfc7d16650a47260dca344dbb97ff2c393a/0> .
_:b57239305	<http://www.w3.org/ns/oa#exact>	"levels" .