diff --git a/package-lock.json b/package-lock.json
index 93eb0a9..79d8827 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -312,6 +312,14 @@
         "@phosphor/virtualdom": "^1.2.0"
       }
     },
+    "@rdfjs/types": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@rdfjs/types/-/types-1.0.1.tgz",
+      "integrity": "sha512-YxVkH0XrCNG3MWeZxfg596GFe+oorTVusmNxRP6ZHTsGczZ8AGvG3UchRNkg3Fy4MyysI7vBAA5YZbESL+VmHQ==",
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "@types/codemirror": {
       "version": "0.0.79",
       "resolved": "https://registry.npmjs.org/@types/codemirror/-/codemirror-0.0.79.tgz",
@@ -371,14 +379,21 @@
       }
     },
     "ajv": {
-      "version": "6.10.2",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.2.tgz",
-      "integrity": "sha512-TXtUUEYHuaTEbLZWIKUr5pmBuhDLy+8KYtPYdcV8qC+pOZL+NKqYwvWSRrVXHn+ZmRRAu8vJTAznH7Oag6RVRw==",
+      "version": "6.12.6",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
+      "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
       "requires": {
-        "fast-deep-equal": "^2.0.1",
+        "fast-deep-equal": "^3.1.1",
         "fast-json-stable-stringify": "^2.0.0",
         "json-schema-traverse": "^0.4.1",
         "uri-js": "^4.2.2"
+      },
+      "dependencies": {
+        "fast-deep-equal": {
+          "version": "3.1.3",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
+          "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q=="
+        }
       }
     },
     "ansi-styles": {
@@ -534,11 +549,6 @@
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
       "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
     },
-    "fast-deep-equal": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-2.0.1.tgz",
-      "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk="
-    },
     "fast-json-stable-stringify": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.0.0.tgz",
@@ -677,11 +687,6 @@
       "resolved": "https://registry.npmjs.org/moment/-/moment-2.24.0.tgz",
       "integrity": "sha512-bV7f+6l2QigeBBZSM/6yTNq4P2fNpSWj/0e7jQcy87A8e7o2nAfP/34/2ky5Vw4B9S446EtIhodAzkFCcR4dQg=="
     },
-    "n3": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/n3/-/n3-1.2.1.tgz",
-      "integrity": "sha512-5va8zsh02owDul7+5bj35cGOzWU7DeJHwQK3F8NDKtiYqPgWcFTg/zLxJs1JeRF2n6j5PI/eR9DCokS7nLrevA=="
-    },
     "node-fetch": {
       "version": "2.6.0",
       "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.0.tgz",
@@ -936,6 +941,14 @@
       "resolved": "https://registry.npmjs.org/querystringify/-/querystringify-2.1.1.tgz",
       "integrity": "sha512-w7fLxIRCRT7U8Qu53jQnJyPkYZIaR4n5151KMfcJlO/A9397Wxb1amJvROTK6TOnp7PfoAmg/qXiNHI+08jRfA=="
     },
+    "rdf-data-factory": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/rdf-data-factory/-/rdf-data-factory-1.1.0.tgz",
+      "integrity": "sha512-g8feOVZ/KL1OK2Pco/jDBDFh4m29QDsOOD+rWloG9qFvIzRFchGy2CviLUX491E0ByewXxMpaq/A3zsWHQA16A==",
+      "requires": {
+        "@rdfjs/types": "*"
+      }
+    },
     "react": {
       "version": "16.8.6",
       "resolved": "https://registry.npmjs.org/react/-/react-16.8.6.tgz",
@@ -1063,11 +1076,11 @@
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     },
     "sparqljs": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/sparqljs/-/sparqljs-3.0.0.tgz",
-      "integrity": "sha512-uPlGML5IWfex1Up2YSA2LnvEJjyL87KCNXQ2vDnDbgraWKivy/pHxarlJA+6NUWFllNgN+1LmWFzanTRg8mhZg==",
+      "version": "3.5.1",
+      "resolved": "https://registry.npmjs.org/sparqljs/-/sparqljs-3.5.1.tgz",
+      "integrity": "sha512-sHc6z7hNF3ACvXurKe8hT1sD52Fc0fN3uPLS6SQnXRV9CJl33GNAS4w5Dd3X3GgykUt9SlnjhI1QRKhLzun4qQ==",
       "requires": {
-        "n3": "^1.0.4"
+        "rdf-data-factory": "^1.0.4"
       }
     },
     "srcset": {