_:b56178776	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/7ad8d005051221c277ffd07eed5072a502408ee5/3> .
_:b56178777	<http://www.w3.org/ns/oa#exact>	"placebo" .
_:b56178776	<http://www.w3.org/ns/oa#hasSelector>	_:b56178777 .
_:b56178777	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .