_:b56971356 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/87a937ec2cd698b7d24ade1803a22852747ec8c7/4> . _:b56971356 <http://www.w3.org/ns/oa#hasSelector> _:b56971357 . _:b56971357 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b56971357 <http://www.w3.org/ns/oa#exact> "recurrence" .