_:b56890448	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/89fc23ed55ad474b4b4056c0a3dadd315573f57e/0> .
_:b56890449	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56890448	<http://www.w3.org/ns/oa#hasSelector>	_:b56890449 .
_:b56890449	<http://www.w3.org/ns/oa#exact>	"immune responses" .