ling possibilities.</p>
<pre><code class="hljs css r">str(x)
</code></pre>
<pre><code class="hljs">'data.frame':   30109 obs. of  14 variables:
<span class="hljs-meta"> $</span><span class="bash"> doc_id       : chr  <span class="hljs-string">"47860059"</span> <span class="hljs-string">"47860059"</span> <span class="hljs-string">"47860059"</span> <span class="hljs-string">"47860059"</span> ...</span>
<span class="hljs-meta"> $</span><span class="bash"> paragraph_id : int  1 1 1 1 1 1 1 1 1 1 ...</span>
<spa