If a Tree Falls
Premiering at the 2011 Sundance Film Festival , "If a Tree Falls" was rapidly acclaimed by critics as many considered it one of the best documentaries of 2011 for its thought-provoking portrayal of complex environmental and political issues . 
<triplet> 2011 Sundance Film Festival <subj> 2011 <obj> point in time <subj> 2011 <obj> point in time <triplet> If a Tree Falls <subj> 2011 <obj> publication date <subj> 2011 <obj> publication date