_:b56933768	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/fa8d45fedf2d3a8cb40d585b0785f1062c307925/0> .
_:b56933769	<http://www.w3.org/ns/oa#exact>	"blood urea" .
_:b56933769	<http://www.w3.org/ns/oa#exact>	"nitrogen" .
_:b56933768	<http://www.w3.org/ns/oa#hasSelector>	_:b56933769 .
_:b56933769	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .