_:b57075053 <http://www.w3.org/ns/oa#exact> "MD" . _:b57075052 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/f2b6dbc8ea7002e8a42d2ced507fa71c8eae6a31/0> . _:b57075052 <http://www.w3.org/ns/oa#hasSelector> _:b57075053 . _:b57075053 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> .