_:b56291740	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/05b0c934f1725c298940503d54c872da2e496895/2> .
_:b56291741	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56291740	<http://www.w3.org/ns/oa#hasSelector>	_:b56291741 .
_:b56291741	<http://www.w3.org/ns/oa#exact>	"placebo" .