_:b57575232 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/c383b8dedcefbf78e370b0152058176d9219330e/1> . _:b57575232 <http://www.w3.org/ns/oa#hasSelector> _:b57575233 . _:b57575233 <http://www.w3.org/ns/oa#exact> "Immunoglobulin gene" . _:b57575233 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> .