_:b57180269	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57180268	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/c280d46d6fa7e2c2938a5c09bd6b092e1058a9b0/1> .
_:b57180269	<http://www.w3.org/ns/oa#exact>	"antigen" .
_:b57180268	<http://www.w3.org/ns/oa#hasSelector>	_:b57180269 .