_:b56270108	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/d42e37e51ac755eb649d6c9b4d669bfd576798e1/0> .
_:b56270108	<http://www.w3.org/ns/oa#hasSelector>	_:b56270109 .
_:b56270109	<http://www.w3.org/ns/oa#exact>	"placebo" .
_:b56270109	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .