a documentary film
... that a documentary film of Aretha Franklin's Amazing Grace concert in 1972 languished in a studio vault for decades because the director did not use a clapperboard?
... that <b id="mwAXk"><a href="./Amazing_Grace_(2018_film)" id="mwAXo" rel="mw:WikiLink" title="Amazing Grace (2018 film)">a documentary film</a></b> of <a href="./Aretha_Franklin" id="mwAXs" rel="mw:WikiLink" title="Aretha Franklin">Aretha Franklin</a>'s <i id="mwAXw">(pictured)</i> <i id="mwAX0"><a href="./Amazing_Grace_(Aretha_Franklin_album)" id="mwAX4" rel="mw:WikiLink" title="Amazing Grace (Aretha Franklin album)">Amazing Grace</a></i> concert in 1972 languished in a studio vault for decades because the director did not use a <a href="./Clapperboard" id="mwAX8" rel="mw:WikiLink" title="Clapperboard">clapperboard</a>?