atural-language-classifier/api',
  username: '&lt;username>',
  password: '&lt;password>',
  version: 'v1'
});

natural_language_classifier.classify({
  text: 'Is it sunny?',
  classifier_id: '&lt;classifier-id>' },
  function(err, response) {
    if (err)
      console.log('error:', err);
    else
      console.log(JSON.stringify(response, null, 2));
});</code></pre><p>See this <a href="https://github.com/watson-developer-cloud/node-sdk/blob/master/examples/natural_language_classifier.v1.js">example</a> to