_:b56953824	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/859c0758bc35606e020ddcb225d356df237e3154/0> .
_:b56953824	<http://www.w3.org/ns/oa#hasSelector>	_:b56953825 .
_:b56953825	<http://www.w3.org/ns/oa#exact>	"pH" .
_:b56953825	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .