Kaouther Ben Hania elicited the longest standing ovation in recent memory at the Venice Film Festival in September, when her powerful, political film “ The Voice of Hind Rajab ” premiered to more than 20 minutes of thunderous applause. The Tunisian director, whose two previous films — “The Man Who Sold His Skin” and “Four Daughters” — were Oscar-nominated, has since been touring the festival circuit with “The Voice of Hind Rajab,” which is Tunisia’s official submission for international feature