Tabs to spaces; consistent indent
diff --git a/static/tutorials/sparql_data/vc-db-1.rdf b/static/tutorials/sparql_data/vc-db-1.rdf
index b94e435..b57eb13 100644
--- a/static/tutorials/sparql_data/vc-db-1.rdf
+++ b/static/tutorials/sparql_data/vc-db-1.rdf
@@ -1,37 +1,37 @@
 <rdf:RDF
-  xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
-  xmlns:vCard='http://www.w3.org/2001/vcard-rdf/3.0#'
-   >
+    xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
+    xmlns:vCard='http://www.w3.org/2001/vcard-rdf/3.0#'
+    >
 
   <rdf:Description rdf:about="http://somewhere/JohnSmith">
     <vCard:FN>John Smith</vCard:FN>
     <vCard:N rdf:parseType="Resource">
-	<vCard:Family>Smith</vCard:Family>
-	<vCard:Given>John</vCard:Given>
+	    <vCard:Family>Smith</vCard:Family>
+	    <vCard:Given>John</vCard:Given>
     </vCard:N>
   </rdf:Description>
 
   <rdf:Description rdf:about="http://somewhere/RebeccaSmith">
     <vCard:FN>Becky Smith</vCard:FN>
     <vCard:N rdf:parseType="Resource">
-	<vCard:Family>Smith</vCard:Family>
-	<vCard:Given>Rebecca</vCard:Given>
+	    <vCard:Family>Smith</vCard:Family>
+	    <vCard:Given>Rebecca</vCard:Given>
     </vCard:N>
   </rdf:Description>
 
   <rdf:Description rdf:about="http://somewhere/SarahJones">
     <vCard:FN>Sarah Jones</vCard:FN>
     <vCard:N rdf:parseType="Resource">
-	<vCard:Family>Jones</vCard:Family>
-	<vCard:Given>Sarah</vCard:Given>
+	    <vCard:Family>Jones</vCard:Family>
+	    <vCard:Given>Sarah</vCard:Given>
     </vCard:N>
   </rdf:Description>
 
   <rdf:Description rdf:about="http://somewhere/MattJones">
     <vCard:FN>Matt Jones</vCard:FN>
     <vCard:N
-	vCard:Family="Jones"
-	vCard:Given="Matthew"/>
+	      vCard:Family="Jones"
+	      vCard:Given="Matthew"/>
   </rdf:Description>
 
 </rdf:RDF>
diff --git a/static/tutorials/sparql_data/vc-db-2.rdf b/static/tutorials/sparql_data/vc-db-2.rdf
index fa66f34..5728920 100644
--- a/static/tutorials/sparql_data/vc-db-2.rdf
+++ b/static/tutorials/sparql_data/vc-db-2.rdf
@@ -1,15 +1,15 @@
 <rdf:RDF
-  xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
-  xmlns:vCard='http://www.w3.org/2001/vcard-rdf/3.0#'
-  xmlns:info='http://somewhere/peopleInfo#'
-   >
+    xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
+    xmlns:vCard='http://www.w3.org/2001/vcard-rdf/3.0#'
+    xmlns:info='http://somewhere/peopleInfo#'
+    >
 
   <rdf:Description rdf:about="http://somewhere/JohnSmith">
     <vCard:FN>John Smith</vCard:FN>
     <info:age rdf:datatype='http://www.w3.org/2001/XMLSchema#integer'>25</info:age>
     <vCard:N rdf:parseType="Resource">
-	<vCard:Family>Smith</vCard:Family>
-	<vCard:Given>John</vCard:Given>
+	    <vCard:Family>Smith</vCard:Family>
+	    <vCard:Given>John</vCard:Given>
     </vCard:N>
   </rdf:Description>
 
@@ -17,24 +17,24 @@
     <vCard:FN>Becky Smith</vCard:FN>
     <info:age rdf:datatype='http://www.w3.org/2001/XMLSchema#integer'>23</info:age>
     <vCard:N rdf:parseType="Resource">
-	<vCard:Family>Smith</vCard:Family>
-	<vCard:Given>Rebecca</vCard:Given>
+	    <vCard:Family>Smith</vCard:Family>
+	    <vCard:Given>Rebecca</vCard:Given>
     </vCard:N>
   </rdf:Description>
 
   <rdf:Description rdf:about="http://somewhere/SarahJones">
     <vCard:FN>Sarah Jones</vCard:FN>
     <vCard:N rdf:parseType="Resource">
-	<vCard:Family>Jones</vCard:Family>
-	<vCard:Given>Sarah</vCard:Given>
+	    <vCard:Family>Jones</vCard:Family>
+	    <vCard:Given>Sarah</vCard:Given>
     </vCard:N>
   </rdf:Description>
 
   <rdf:Description rdf:about="http://somewhere/MattJones">
     <vCard:FN>Matt Jones</vCard:FN>
     <vCard:N
-	vCard:Family="Jones"
-	vCard:Given="Matthew"/>
+	      vCard:Family="Jones"
+	      vCard:Given="Matthew"/>
   </rdf:Description>
 
 </rdf:RDF>
diff --git a/static/tutorials/sparql_data/vc-db-3.rdf b/static/tutorials/sparql_data/vc-db-3.rdf
index b9696e7..99d816d 100644
--- a/static/tutorials/sparql_data/vc-db-3.rdf
+++ b/static/tutorials/sparql_data/vc-db-3.rdf
@@ -1,13 +1,13 @@
 <rdf:RDF
-  xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
-  xmlns:vCard='http://www.w3.org/2001/vcard-rdf/3.0#'
-   >
+    xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
+    xmlns:vCard='http://www.w3.org/2001/vcard-rdf/3.0#'
+    >
 
   <rdf:Description rdf:about="http://somewhere/JohnSmith">
     <vCard:FN>John Smith</vCard:FN>
     <vCard:N rdf:parseType="Resource">
-	<vCard:Family>Smith</vCard:Family>
-	<vCard:Given>John</vCard:Given>
+	    <vCard:Family>Smith</vCard:Family>
+	    <vCard:Given>John</vCard:Given>
     </vCard:N>
   </rdf:Description>
 
diff --git a/static/tutorials/sparql_data/vc-db-4.rdf b/static/tutorials/sparql_data/vc-db-4.rdf
index e6dda27..74a67d7 100644
--- a/static/tutorials/sparql_data/vc-db-4.rdf
+++ b/static/tutorials/sparql_data/vc-db-4.rdf
@@ -1,13 +1,13 @@
 <rdf:RDF
-  xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
-  xmlns:vCard='http://www.w3.org/2001/vcard-rdf/3.0#'
-   >
+    xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#'
+    xmlns:vCard='http://www.w3.org/2001/vcard-rdf/3.0#'
+    >
 
   <rdf:Description rdf:about="http://somewhere/JohnSmith">
     <vCard:FN>John Smith</vCard:FN>
     <vCard:EMAIL rdf:parseType="Resource">
-	<rdf:type rdf:resource="http://www.w3.org/2001/vcard-rdf/3.0#internet"/>
-	<rdf:value>John@somewhere.com</rdf:value>
+	    <rdf:type rdf:resource="http://www.w3.org/2001/vcard-rdf/3.0#internet"/>
+	    <rdf:value>John@somewhere.com</rdf:value>
     </vCard:EMAIL>
   </rdf:Description>