Fix check SPARQL exercise

Close #2

lod/SPARQL.ipynb

@@ -691,7 +691,7 @@
     "deletable": false,
     "editable": false,
     "nbgrader": {
-     "checksum": "ed9321d104cd1d6e7839e3bcac78a8f1",
+     "checksum": "a6db5e4879286b0617be04711002ad63",
      "grade": true,
      "grade_id": "cell-4d6a64dde67f0e11",
      "locked": true,
@@ -702,8 +702,8 @@
    },
    "outputs": [],
    "source": [
-    "assert 'Miguel de Cervantes' in LAST_QUERY['columns']['nombre']\n",
+    "assert 'Camilo José Cela' in LAST_QUERY['columns']['nombre']\n",
-    "assert '1547-1-1' in LAST_QUERY['columns']['fechaNac']\n",
+    "assert '1916-05-11' in LAST_QUERY['columns']['fechaNac']\n",
     "assert '' not in LAST_QUERY['columns']['fechaNac'] # All birthdates are defined\n",
     "assert '' in LAST_QUERY['columns']['fechaDef'] # Some deathdates are not defined"
    ]