_:b57318288	<http://www.w3.org/ns/oa#hasSelector>	_:b57318289 .
_:b57318289	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57318289	<http://www.w3.org/ns/oa#exact>	"subgroups" .
_:b57318288	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/b84e6ad581b7fbd5a937961034b03ed2c49b4923/0> .