_:b57592972	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/1558002ad644d21ca97b329f91690a20a2171bdd/0> .
_:b57592973	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57592973	<http://www.w3.org/ns/oa#exact>	"grade 3" .
_:b57592972	<http://www.w3.org/ns/oa#hasSelector>	_:b57592973 .