title: How to detect if a event/action occurred from a text?
body: <p>I was wondering if there's a NLP/ML technique for this.</p>
  
  <p>Suppose given a set of sentences, </p>
  
  <ol>
  <li>I watched the movie.</li>
  <li>Heard the movie is great, have to watch it.</li>
  <li>Got the tickets for the movie. </li>
  <li>I am at the movie.</li>
  </ol>
  
  <p>If i have to assign a probability to each of these sentences, that they have "actually" watched the movie, i would assign it in decreasing order of 1,4,3,2.</p>
  
  <p>Is there a way to do this automatically, using some classifier or rules? Any paper/link would help.</p>