_:b56255241	<http://www.w3.org/ns/oa#exact>	"placebo" .
_:b56255240	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/f46ad7149ec602bd131fd370682f1b73235cfacc/2> .
_:b56255241	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56255240	<http://www.w3.org/ns/oa#hasSelector>	_:b56255241 .