_:b57798968	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/58f2c1fe2acb4c01f0df614bc9b1c96b52939054/1> .
_:b57798968	<http://www.w3.org/ns/oa#hasSelector>	_:b57798969 .
_:b57798969	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57798969	<http://www.w3.org/ns/oa#exact>	"pH" .