_:b56846568	<http://www.w3.org/ns/oa#hasSelector>	_:b56846569 .
_:b56846569	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b56846568	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/5630ef4d94b44c63cd27072c0047bfd0901c1830/2> .
_:b56846569	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .