_:b57870564 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/a3c91bef4b5590eb176cd5e43e45d0ea546c6efe/4> . _:b57870565 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57870564 <http://www.w3.org/ns/oa#hasSelector> _:b57870565 . _:b57870565 <http://www.w3.org/ns/oa#exact> "income" .