We speak with the filmmakers behind three of the top contenders in the Oscars' Best Documentary Feature category: The Tale of Silyan, directed by Tamara Kotevska; Put Your Soul on Your Hand and Walk, directed by Sepideh Farsi, and Cover-Up, directed by Laura Poitras and Mark Obenhaus. We caught up with them at SFFILM's Doc Stories in San Francisco, a 4-day film festival that has become  a critical stop during awards season.

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