_:b56510944 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/0104f6ceccf92ae8567a0102f89cbb976969a774/1> . _:b56510944 <http://www.w3.org/ns/oa#hasSelector> _:b56510945 . _:b56510945 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b56510945 <http://www.w3.org/ns/oa#exact> "allele frequency" .