_:b56612968	<http://www.w3.org/ns/oa#hasSelector>	_:b56612969 .
_:b56612969	<http://www.w3.org/ns/oa#exact>	"grade 3" .
_:b56612969	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56612968	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/5051ca4d0c159c2f384074bb5ad4a84254c8ba82/0> .