_:b56244753	<http://www.w3.org/ns/oa#exact>	"surgical masks" .
_:b56244752	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/f1b687dce59c64514299182db27871ccd535cacd/4> .
_:b56244753	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56244752	<http://www.w3.org/ns/oa#hasSelector>	_:b56244753 .