Question: At the 71st annual Venice International Film Festival, the Silver Lion Grand Jury Prize was won by a 2014 international co-produced documentary that is a companion piece to what?
Sentence (from "Foxtrot (2017 film)"): Foxtrot (Hebrew: פוֹקְסטְרוֹט‎ ‎ ) is a 2017 Israeli drama film directed by Samuel Maoz.
Relevant evidence: No