Update sparql-intro.ipynb

sparql-intro.ipynb

@@ -12,7 +12,7 @@
     "\n",
     "Finally, _SPARQL_ is an acronymn for SPARQL Protocol and RDF Query Language (yes, it's one of _those_ kinds of acronyms).\n",
     "\n",
-    "In this notebook, we're not using Python or R directly. Instead, we've set up a 'kernel' (think of that as the 'engine' for the notebook) that already includes everything necessary to set up and run SPARQL queries. (For reference, the kernel code is [here](https://github.com/paulovn/sparql-kernel)). Both R and Python can interact with and query endpoints, and manipulate linked open data, but for the sake of learning a bit of what one can do with SPARQL, this notebook keeps all of that ancillary code tucked away. The followup notebook to this one shows you how to use R to do some basic manipulations of the query results."
+    "In this notebook, we're not using Python or R directly. Instead, we've set up a 'kernel' (think of that as the 'engine' for the notebook) that already includes everything necessary to set up and run SPARQL queries. (For reference, the kernel code is [here](https://github.com/paulovn/sparql-kernel)). Both R and Python can interact with and query endpoints, and manipulate linked open data, but for the sake of learning a bit of what one can do with SPARQL, this notebook keeps all of that ancillary code tucked away. The [followup notebook](Using R to Retrieve and Visualize Data from SPARQL.ipynb) to this one shows you how to use R to do some basic manipulations of the query results."
    ]
   },
   {