_:b57963724	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/0e0bc0a3a1d2354786c3554e9bf61938701c9841/15> .
_:b57963725	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57963724	<http://www.w3.org/ns/oa#hasSelector>	_:b57963725 .
_:b57963725	<http://www.w3.org/ns/oa#exact>	"pH" .