title: Start a Task thread from another Task when a certain time frame passed by
body: <p>How can I start a c# 4.0 Task2 (TPL) from another Task1 after a certain time x seconds?</p>
  
  <p>Sample scenario:</p>
  
  <p>Start Task1 that computing an algo. When the computing took at least X seconds start another Task to show the user a nice animation not blocking the UI.</p>