title: How to convert words into sentence string- Text Classification
body: <p>So I am currently working with Brown Corpus, and I am having a slight issue. In order to apply tokenize feature, I first need to have the Brown Corpus into sentences. This is what I have so far:</p>
  
  <pre><code>from nltk.corpus import brown
  import nltk
  
  
  target_text = [s for s in brown.fileids()
                     if s.startswith('ca01') or s.startswith('ca02')]
  
  data = []
  
  total_text = [s for s in brown.fileids()
                     if s.startswith('ca01') or s.startswith('ca02') or s.startswith('cp01') or s.startswith('cp02')]
  
  
  for text in total_text:
  
      if text in target_text:
          tag = "pos"
      else:
          tag = "neg"
      words=list(brown.sents(total_text))    
      data.extend( [(tag, word) for word in words] )
  
  data
  </code></pre>
  
  <p>When I do this, I get data that looks like this:</p>
  
  <pre><code>[('pos',
    ['The',
     'Fulton',
     'County',
     'Grand',
     'Jury',
     'said',
     'Friday',
     'an',
     'investigation',
     'of',
     "Atlanta's",
     'recent',
     'primary',
     'election',
     'produced',
     '``',
     'no',
     'evidence',
     "''",
     'that',
     'any',
     'irregularities',
     'took',
     'place',
     '.']),
   ('pos',
    ['The',
     'jury',
     'further',
     'said',
     'in',
     'term-end',
     'presentments',
     'that',
     'the',
     'City',
     'Executive',
     'Committee',
     ',',
     'which',
     'had',
     'over-all',
     'charge',
     'of',
     'the',
     'election',
     ',',
     '``',
     'deserves',
     'the',
     'praise',
     'and',
     'thanks',
     'of',
     'the',
     'City',
     'of',
     'Atlanta',
     "''",
     'for',
     'the',
     'manner',
     'in',
     'which',
     'the',
     'election',
     'was',
     'conducted',
     '.'])
  </code></pre>
  
  <p>What I need is something that looks like:</p>
  
  <pre><code>[('pos', 'The Fulton County Grand Jury said Friday an investigation of Atlanta's recent primary election ....'), ('pos', The jury further said in term-end presentments that the City...)]
  </code></pre>
  
  <p>Is there any way to fix this? This project is taking way longer than I've expected..</p>