_:b56549745	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56549744	<http://www.w3.org/ns/oa#hasSelector>	_:b56549745 .
_:b56549745	<http://www.w3.org/ns/oa#exact>	"pH" .
_:b56549744	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/acee92aa1bfa77bcb9516cbed2ef86751d5bcab5/1> .