_:b57559580 <http://www.w3.org/ns/oa#hasSelector> _:b57559581 . _:b57559581 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57559581 <http://www.w3.org/ns/oa#exact> "formation" . _:b57559580 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/52652f9d6b5f22687d1e2e8ed42f02bae1562a78/0> .