_:b57551981	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57551980	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/1a87f9c9c96df9d9576af792ef0d95d771b40d5c/4> .
_:b57551981	<http://www.w3.org/ns/oa#exact>	"potassium" .
_:b57551980	<http://www.w3.org/ns/oa#hasSelector>	_:b57551981 .