{ "items" : [
    { "id" : "_:b57946704"
      "properties" : {
        "http://www.w3.org/ns/oa#hasSource" : [ "http://ns.inria.fr/covid19/arg/844be100b06408734894f48a4db56a05ba260621/3" ] ,
        "http://www.w3.org/ns/oa#hasSelector" : [ "nodeID://b57946705" ] } },

    { "id" : "_:b57946705"
      "properties" : {
        "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" : [ "http://www.w3.org/ns/oa#TextQuoteSelector" ] ,
        "http://www.w3.org/ns/oa#exact" : [ "concentration"] } } }