title: R- could not find function "tokenize"
body: <p>I'm trying to tokenize a sentence. I have installed the openNLP and the NLP packages but when I'm trying to run the tokenize function on a sentence I'm getting the below array:  </p>
  
  <pre><code>        Error: could not find function "tokenize"     
          &gt; library(NLP)
          &gt; library(openNLP)
          &gt; s
           [1] "This is a sentence."
          &gt; tokenize(s,"en") 
            Error: could not find function "tokenize"
  </code></pre>
  
  <p>Thanks</p>