_:b56316572	<http://www.w3.org/ns/oa#hasSelector>	_:b56316573 .
_:b56316573	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56316572	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/3c2b3af825af34c44d636c9b8ac19f3948e23d0d/4> .
_:b56316573	<http://www.w3.org/ns/oa#exact>	"placebo" .