_:b57918769	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57918768	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/15753984412d073dd4c6daed84e3d294f728b636/1> .
_:b57918769	<http://www.w3.org/ns/oa#exact>	"heparin" .
_:b57918768	<http://www.w3.org/ns/oa#hasSelector>	_:b57918769 .