title: how to use spacy lemmatizer to get a word into basic form
body: <p>I am new to spacy and I want to use its lemmatizer function, but I don't know how to use it, like I into strings of word, which will return the string with the basic form the words.</p>
  
  <p>Examples:</p>
  
  <ul>
  <li>'words'=> 'word'</li>
  <li>'did' => 'do'</li>
  </ul>
  
  <p>Thank you.</p>