_:b56278696	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/5eb91fe4cea5a06b48b39b8ac338ae42b12cc336/6> .
_:b56278697	<http://www.w3.org/ns/oa#exact>	"placebo" .
_:b56278696	<http://www.w3.org/ns/oa#hasSelector>	_:b56278697 .
_:b56278697	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .