<span class="hljs-string">"weekend"</span> <span class="hljs-string">"end"</span> ...</span>
<span class="hljs-meta"> $</span><span class="bash"> upos         : chr  <span class="hljs-string">"DET"</span> <span class="hljs-string">"ADJ"</span> <span class="hljs-string">"NOUN"</span> <span class="hljs-string">"NOUN"</span> ...</span>
<span class="hljs-meta"> $</span><span class="bash"> xpos         : chr  NA NA NA NA ...</span>
<span class="hljs-meta"> $</span><span class="bash"> feats        : chr  <span cl