What datatype is the output?
<pre><code> pos_tag(word_tokenize("John's big idea isn't all that bad.")) 
 [('John', 'NNP'), ("'s", 'POS'), ('big', 'JJ'), ('idea', 'NN'), ('is',
 'VBZ'), ("n't", 'RB'), ('all', 'DT'), ('that', 'DT'), ('bad', 'JJ'),
 ('.', '.')]
</code></pre>

<p>Don't recognize the syntax at all. How would I iterate over this checking for <code>JJ</code> in 2nd value in the pairs.</p>
