added tldr to sentence equality

nbs/tutorials/001_basic_tasks.ipynb

@@ -236,11 +236,25 @@
    ]
   },
   {
-   "cell_type": "code",
-   "execution_count": null,
+   "cell_type": "markdown",
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "source": [
+    "```python\n",
+    "%%spannerlog\n",
+    "\n",
+    "# split documents into sentences with the split ie function\n",
+    "Sents(doc_id,sent)<-\n",
+    "    Docs(doc_id,text),split(text)->(sent).\n",
+    "\n",
+    "# get all pairs of equal sentences using the eq_content_spans ie function\n",
+    "# make sure we only get unique pairs by using the span_lt ie function to avoid symmetry\n",
+    "EqualSentsUnique(doc_id1,sent1,doc_id2,sent2)<-\n",
+    "    Sents(doc_id1,sent1),\n",
+    "    Sents(doc_id2,sent2),\n",
+    "    span_lt(sent1,sent2)->(True),\n",
+    "    eq_content_spans(sent1,sent2)->(True).\n",
+    "```"
+   ]
   },
   {
    "cell_type": "markdown",