diff --git a/res/misc/TODO.txt b/res/misc/TODO.txt
new file mode 100644
index 0000000..c6b8f9d
--- /dev/null
+++ b/res/misc/TODO.txt
@@ -0,0 +1 @@
+Before applying certain NER tool, you must complete the keys.xml file, as explained in the README file.
\ No newline at end of file
diff --git a/res/misc/keys.xml b/res/misc/keys.xml
new file mode 100644
index 0000000..66464dc
--- /dev/null
+++ b/res/misc/keys.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<keys
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+	xsi:noNamespaceSchemaLocation="../schemas/keys.xsd">
+<!-- 
+	Nerwip - Named Entity Extraction in Wikipedia Pages
+	Copyright 2011 Yasa Akbulut, Burcu Küpelioğlu & Vincent Labatut
+	Copyright 2012 Burcu Küpelioğlu, Samet Atdağ & Vincent Labatut
+	Copyright 2013 Samet Atdağ & Vincent Labatut
+	Copyright 2014-15 Vincent Labatut
+	
+	This file is part of Nerwip - Named Entity Extraction in Wikipedia Pages.
+	
+	Nerwip - Named Entity Extraction in Wikipedia Pages is free software: you can 
+	redistribute it and/or modify it under the terms of the GNU General Public License 
+	as published by the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+	 
+	Nerwip - Named Entity Extraction in Wikipedia Pages is distributed in the hope 
+	that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty 
+	of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 
+	License for more details.
+	
+	You should have received a copy of the GNU General Public License
+	along with Nerwip - Named Entity Extraction in Wikipedia Pages.  
+	If not, see <http://www.gnu.org/licenses/>.
+ -->
+
+	<key name="Freebase" value="" />
+	<key name="OpenCalais" value="" />
+
+</keys>