_:b57512400 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/47657978dd272aff0e0be8c8aa3877b8db673067/0> . _:b57512401 <http://www.w3.org/ns/oa#exact> "immune response" . _:b57512400 <http://www.w3.org/ns/oa#hasSelector> _:b57512401 . _:b57512401 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> .