RDF changes

rdf/RDF.ipynb

@@ -531,7 +531,18 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "deletable": false,
+    "editable": false,
+    "nbgrader": {
+     "checksum": "d6f1bf2230282256e5fcb85dba0eef45",
+     "grade": false,
+     "grade_id": "cell-3241bf07ae153beb",
+     "locked": true,
+     "schema_version": 1,
+     "solution": false
+    }
+   },
    "source": [
     "To make sure we are following Principles 1 and 2, we should use URIs that can be queried.\n",
     "For the sake of this exercise, you have use the made-up `http://example/sitc/` as base for our URIs.\n",
@@ -586,7 +597,19 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "deletable": false,
+    "editable": false,
+    "nbgrader": {
+     "checksum": "e8ba71b32e6d4f15aef9dc7fe70387fe",
+     "grade": true,
+     "grade_id": "cell-2fb6e144a6691ede",
+     "locked": true,
+     "points": 10,
+     "schema_version": 1,
+     "solution": false
+    }
+   },
    "outputs": [],
    "source": [
     "# This will check that your definition for the first exercise is correct.\n",
@@ -595,14 +618,36 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "deletable": false,
+    "editable": false,
+    "nbgrader": {
+     "checksum": "75d90c9a83c694f61e51bd5c47a672d9",
+     "grade": false,
+     "grade_id": "cell-63a55e7b8b195d59",
+     "locked": true,
+     "schema_version": 1,
+     "solution": false
+    }
+   },
    "source": [
     "## Exercise 2: Explore existing data"
    ]
   },
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "deletable": false,
+    "editable": false,
+    "nbgrader": {
+     "checksum": "23632182da48df109721378408e57f01",
+     "grade": false,
+     "grade_id": "cell-3843c3ce98a77c56",
+     "locked": true,
+     "schema_version": 1,
+     "solution": false
+    }
+   },
    "source": [
     "The goal of this exercise is to explore and compare annotations from existing websites.\n",
     "\n",
@@ -618,7 +663,18 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {},
+   "metadata": {
+    "deletable": false,
+    "editable": false,
+    "nbgrader": {
+     "checksum": "6c4b25718f493ad5964370f412519543",
+     "grade": false,
+     "grade_id": "cell-f42c087c9065bb23",
+     "locked": true,
+     "schema_version": 1,
+     "solution": false
+    }
+   },
    "source": [
     "Let us explore some semantic annotations from popular websites.\n",
     "\n",