_:b57208153	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57208152	<http://www.w3.org/ns/oa#hasSelector>	_:b57208153 .
_:b57208153	<http://www.w3.org/ns/oa#exact>	"concentration" .
_:b57208152	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/66d0b42dc23af2562955ec476834fbc51bcb3836/0> .