_:b57720248	<http://www.w3.org/ns/oa#hasSelector>	_:b57720249 .
_:b57720249	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57720249	<http://www.w3.org/ns/oa#exact>	"surface" .
_:b57720248	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/fff17ea9203b59fb5fcd1d7dd9caf3e4a4021200/4> .