_:b57812856	<http://www.w3.org/ns/oa#hasSelector>	_:b57812857 .
_:b57812857	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57812856	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/421501fed1d3f558f238f1fe8a6de15a72664f23/2> .
_:b57812857	<http://www.w3.org/ns/oa#exact>	"tumor necrosis factor" .