_:b56300352	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/3c4ab1ee0a6a59df6d912e8d498e4aaa4a26d431/1> .
_:b56300353	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56300352	<http://www.w3.org/ns/oa#hasSelector>	_:b56300353 .
_:b56300353	<http://www.w3.org/ns/oa#exact>	"placebo" .