_:b57763049	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57763048	<http://www.w3.org/ns/oa#hasSelector>	_:b57763049 .
_:b57763049	<http://www.w3.org/ns/oa#exact>	"levels" .
_:b57763048	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/17d92d371f5552921b86de6fb6cd7e65344ddb2e/0> .