_:b56160604	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/b66704a03a688c4065abff41c4977c4c9939c230/2> .
_:b56160605	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56160604	<http://www.w3.org/ns/oa#hasSelector>	_:b56160605 .
_:b56160605	<http://www.w3.org/ns/oa#exact>	"metformin" .