{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/prov/516198524"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/16429199" ] } },

    { "id" : "http://webisa.webdatacommons.org/16429199"
      "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" : [ "Hydratable chemicals useful in the practice of this invention include alkali metal hydroxides, such as sodium hydroxide and potassium hydroxide; silicates, such as sodium metasilicate; phosphates, particularly phosphates of the formula M--PO3 M)n OM or the corresponding cyclic compounds ##STR1## wherein M is an alkali metal and n is a number ranging from 1 to about 60, typically less than 10 for c" ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "google.com" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/131693183"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/16429199"] } } }
