_:b57051800 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/4989f4d799ed70346c88223a9c3f275b7c13a734/1> . _:b57051801 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57051801 <http://www.w3.org/ns/oa#exact> "anxiety" . _:b57051800 <http://www.w3.org/ns/oa#hasSelector> _:b57051801 .