_:b56813848	<http://www.w3.org/ns/oa#hasSelector>	_:b56813849 .
_:b56813848	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/efaa556b484fbcd9cc34832ffac53ef3e834e9c0/0> .
_:b56813849	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56813849	<http://www.w3.org/ns/oa#exact>	"serum immunoglobulin G" .