_:b56275913	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56275912	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/6d05e7dfa72bc903c5ffefe83bdef661a1e4cc6c/1> .
_:b56275912	<http://www.w3.org/ns/oa#hasSelector>	_:b56275913 .
_:b56275913	<http://www.w3.org/ns/oa#exact>	"placebo" .