{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/199630641"
      "properties" : {
        "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" : [ "http://www.w3.org/ns/prov#Entity" ] ,
        "http://www.w3.org/ns/prov#value" : [ "For enrichment, approaches include size or density-based techniques and/or immunomagnetic separation (i.e., positive selection using epithelial-specific or tumor-associated markers; or negative selection using markers expressed by contaminating cells such as leukocytes)." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "mdpi.com" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/148482750"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/199630641"] } } }
