diff --git a/rdf/RDF.ipynb b/rdf/RDF.ipynb
index bd70e0a..2f5a034 100644
--- a/rdf/RDF.ipynb
+++ b/rdf/RDF.ipynb
@@ -63,7 +63,7 @@
     "\n",
     "# Tools\n",
     "\n",
-    "This notebook is self-contained, but it requires some python libraries.\n",
+    "This notebook is self-contained, but it requires some Python libraries\n",
     "To install them, simply run the following line:"
    ]
   },
@@ -137,13 +137,13 @@
     "This concept may be described as taking care of a dog, for example, whereas a different property `<http://yourwebsite.com/hasDog>` could be described as being the legal owner of the dog.\n",
     "\n",
     "\n",
-    "RDF can be used to embed annotation in many places, including HTML document, using any compatible format.\n",
-    "The options include including RDFa, XML, JSON-LD and [Turtle](https://www.w3.org/TR/turtle/).\n",
+    "RDF can be used to embed annotation in many places, including HTML documents, using any compatible format.\n",
+    "The options include including RDFa, XML, JSON-LD, and [Turtle](https://www.w3.org/TR/turtle/).\n",
     "\n",
     "\n",
     "In the exercises, we will be using turtle notation, because it is very readable.\n",
     "\n",
-    "For instance, turtle allows us to re-use parts of a previous triple to avoid repetition.\n",
+    "For instance, turtle allows us to reuse parts of a previous triple to avoid repetition.\n",
     "Our previous example would look like this:\n",
     "\n",
     "```turtle\n",
@@ -151,7 +151,7 @@
     "                            <http://example.org/age> 7\n",
     "```\n",
     "\n",
-    "Here's another example of document in Turtle, taken from the Turtle specification:\n",
+    "Here's another example of a document in Turtle, taken from the Turtle specification:\n",
     "\n",
     "```turtle\n",
     "@base <http://example.org/> .\n",
@@ -172,7 +172,7 @@
     "\n",
     "The second exercise will show you how to extract this information from any website.\n",
     "\n",
-    "As you can observe in these examples, Turtle defines several ways to specify IRIs in a result. Please, consult the specification for further details. As an overview, IRIs can be:\n",
+    "As you can observe in these examples, Turtle defines several ways to specify IRIs in a result. Please consult the specification for further details. As an overview, IRIs can be:\n",
     " * *relative IRIs*: IRIs resolved relative to the current base IRI. Thus, you should define a base IRI (@base <http://example.org>) and then relative IRIs (i.e. <#spiderman>). The resulting IRI is <http://example.org/spiderman>.\n",
     " * *prefixed names*: a prefixed name (i.e. foaf:Person) is transformed into an IRI by concatenating the IRI of the prefix (@prefix foaf: <http://xmlns.com/foaf/0.1) and the local part of the prefixed name (i.e. Person). So, the resulting IRI is <http://xmlns.com/foaf/0.1/Person\n",
     " * *absolute IRIs*: an already resolved IRI, p.ej. <http://example.com/Auto>."
@@ -200,17 +200,17 @@
     "These vocabularies can be reused in several applications.\n",
     "In the example above, we used the concept of person from an external vocabulary (`foaf:Person`, i.e. http://xmlns.com/foaf/0.1/Person).\n",
     "That way, we do not need to redefine the concept of Person in every application.\n",
-    "There are several well known vocabularies, such as:\n",
+    "There are several well-known vocabularies, such as:\n",
     "\n",
     "* Dublin core, for metadata: http://dublincore.org/\n",
     "* FOAF (Friend-of-a-friend) for social networks: http://www.foaf-project.org/\n",
     "* SIOC for online communities: https://www.w3.org/Submission/sioc-spec/\n",
     "\n",
-    "Using the same vocabularies also makes it easier to automatically process and classify information.\n",
+    "Using the same vocabulary also makes it easier to automatically process and classify information.\n",
     "\n",
     "\n",
-    "That was the motivation behind Schema.org, a collaboration between Google, Microsoft, Yahoo and Yandex.\n",
-    "They aim to provide schemas for structured data annotation of Web sites, e-mails, etc., which can be leveraged by search engines and other automated processes.\n",
+    "That was the motivation behind Schema.org, a collaboration between Google, Microsoft, Yahoo, and Yandex.\n",
+    "They aim to provide schemas for structured data annotation of websites, e-mails, etc., which can be leveraged by search engines and other automated processes.\n",
     "\n",
     "They rely on RDF for representation, and provide a set of common vocabularies that can be shared by every web developer.\n",
     "\n",
@@ -223,7 +223,7 @@
     "* Documentation for hotels: https://schema.org/docs/hotels.html\n",
     "\n",
     "\n",
-    "You can use the documentation to find properties (e.g. `checkinTime`), as well as the type of that property (e.g. `Datetime`)."
+    "You can use the documentation to find properties (e.g., `checkinTime`), as well as the type of that property (e.g. `Datetime`)."
    ]
   },
   {
@@ -326,7 +326,7 @@
     "# YOUR ANSWER HERE\n",
     "```\n",
     "\n",
-    "Depending on the exercise, you might need to fill that part with a Turtle definition (first exercise), some python code (second exercise), or plain text."
+    "Depending on the exercise, you might need to fill that part with a Turtle definition (first exercise), some Python code (second exercise), or plain text."
    ]
   },
   {