film based on "the worst industrial disaster"
... that although the shooting of the film based on "the worst industrial disaster" was completed in 2009, it was not released until 2014?
... that although the shooting of the <b id="mwAXI"><a href="./Bhopal:_A_Prayer_for_Rain" id="mwAXM" rel="mw:WikiLink" title="Bhopal: A Prayer for Rain">film based on "the worst industrial disaster"</a></b> was completed in 2009, it was not released until 2014?