_:b57085621	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57085620	<http://www.w3.org/ns/oa#hasSelector>	_:b57085621 .
_:b57085621	<http://www.w3.org/ns/oa#exact>	"levels" .
_:b57085620	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/cf0df63243de202bd45d6ebd30182f56eceef274/9> .