title: Creating ARFF file from CSV manually
body: <p>I wanted to create an <a href="http://www.cs.waikato.ac.nz/ml/weka/arff.html" rel="nofollow"><code>arff</code></a> file based on this <code>CSV</code> from <code>Kaggle</code></p>
  
  <p><a href="https://www.kaggle.com/c/titanic/download/train.csv" rel="nofollow">https://www.kaggle.com/c/titanic/download/train.csv</a></p>
  
  <p>here is a part of the <code>arff</code> file I've made</p>
  
  <pre><code>@relation titanic
  
  @attribute PassengerId numeric
  @attribute Survived {0,1}
  @attribute Pclass {1,2,3}
  @attribute Name string
  @attribute Sex {male,female}
  @attribute Age numeric
  @attribute SibSp numeric
  @attribute Parch numeric
  @attribute Ticket string
  @attribute Fare numeric
  @attribute Cabin string
  @attribute Embarked {C,Q,S}
  
  @data
  1,0,3,"Braund, Mr. Owen Harris",male,22,1,0,A/5 21171,7.25,,S
  2,1,1,"Cumings, Mrs. John Bradley (Florence Briggs Thayer)",female,38,1,0,PC 17599,71.2833,C85,C
  3,1,3,"Heikkinen, Miss. Laina",female,26,0,0,STON/O2. 3101282,7.925,,S
  4,1,1,"Futrelle, Mrs. Jacques Heath (Lily May Peel)",female,35,1,0,113803,53.1,C123,S
  </code></pre>
  
  <p>But whene I load it in <a href="http://sourceforge.net/projects/weka/" rel="nofollow"><code>Weka</code></a> it returns me this error :</p>
  
  <pre><code>nominal value not declared in header, read Token[C85], line 18 % the second line of my data 
  </code></pre>
  
  <p>what is wrong in my declarations ?</p>