_:b56495981	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56495980	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/5c89d6281a97b881d0e512efab41fccb6b1da1c3/2> .
_:b56495981	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b56495980	<http://www.w3.org/ns/oa#hasSelector>	_:b56495981 .