Question: When was the event held that "Sieranevada" was selected to compete for the Palme d'Or at?

Context paragraphs:
2016 Cannes Film Festival: The 69th Cannes Film Festival was held from 11 to 22 May 2016.  Australian director George Miller was the President of the Jury for the main competition.  French actor Laurent Lafitte was the host for the opening and closing ceremonies.  On 15 March it was announced that Japanese director Naomi Kawase would serve as the Cinéfondation and Short Film Jury president.  American director Woody Allen's film "Café Society" opened the festival.

Knoxville Nationals: The 5-Hour Energy Knoxville Nationals is an annual sprint car event held at Knoxville Raceway in Knoxville, Iowa.  An Associated Press writer called winning the event "sprint car racing’s premiere title".  It is nicknamed "The Granddaddy of Them All."  The event is the biggest and most prestigious race of the year in sprint car racing.  The Saturday finale is held on the second Saturday in August.  The event is held for four days (Wednesday-Saturday) and is attended annually by approximately 25,000 fans.  The event has the highest paying purse in sprint car racing at $1,000,000 which attracts roughly 100 race teams to compete.

2008 Cannes Film Festival: The 61st Annual Cannes Film Festival was held from 14 to 25 May 2008.  The President of the Official Jury was American actor and director Sean Penn.  Twenty two films from fourteen countries were selected to compete for the Palme d'Or.  The awards were announced on 24 May.  The film "The Class" ("Entre les murs"), directed by Laurent Cantet won the Palme d'Or.

Strikeforce: Four Men Enter, One Man Survives: Strikeforce: Four Men Enter, One Man Survives (also called the Strikeforce Tournament Series) was a mixed martial arts event held at the HP Pavilion in San Jose, California on November 16, 2007.  The event was hosted by Strikeforce in conjunction with bodogFight, and was streamed live on Yahoo! Sports.  The event held two distinctions in that: 1) it contained the first MMA tournament sanctioned by the California State Athletic Commission and 2) Strikeforce's heavyweight champion was determined during the event in a non-tournament fight.

2009 Cannes Film Festival: The 62nd Cannes Film Festival was held from 13 May to 24 May 2009.  French actress Isabelle Huppert was the President of the Jury.  Twenty films from thirteen countries were selected to compete for the Palme d'Or.  The awards were announced on 23 May.  The film "The White Ribbon" ("Das weiße Band"), directed by Michael Haneke won the Palme d'Or.

U.S. Olympic Festival: The U.S. Olympic Festival was an amateur multi-sport event held in the United States by the United States Olympic Committee in the years between Olympic Games.  Started in 1978 as an American counterpart to the communist Spartakiade – a similar event held on a quadrennial basis by the former Soviet Union and its former satellite in East Germany.  As the competitive position of U.S. athletes in the Olympics slipped relative to that of the Soviets and East Germans, it was felt the U.S. needed some kind of multi-sports event to simulate the Olympic experience.  It was originally called the National Sports Festival and was the nation's largest amateur sporting event, before ending in 1995.

Étoiles de Pau: The Étoiles de Pau or Stars of Pau Three Day Event is an eventing competition held in Pau, France.  It is one of six annual CCI**** events in the world (the highest level of competition), in addition to the Burghley Horse Trials and Badminton Horse Trials, held in Great Britain, the Rolex Kentucky Three Day Event held in the United States, the Australian International Three Day Event held in Australia, and the Luhmühlen Horse Trials in Germany.  Pau is held each year in October.

Sieranevada: Sieranevada is a 2016 Romanian film directed by Cristi Puiu and starring Mimi Brănescu.  The plot follows a successful neurologist who attends a family meal supposed to commemorate his deceased father.  It was selected to compete for the Palme d'Or at the 2016 Cannes Film Festival.  It was selected as the Romanian entry for the Best Foreign Language Film at the 89th Academy Awards, but it was not nominated.

Acid-Fest: A Tribute to Trent Acid: Acid-Fest: A Tribute to Trent Acid was an interpromotional professional wrestling memorial event co-produced by the Combat Zone Wrestling (CZW) and Jersey All Pro Wrestling (JAPW) promotions, which took place on July 10, 2010, at the Viking Hall in South Philadelphia, Pennsylvania.  The show was held in honor of Trent Acid, one-half of the independent wrestling tag team The Backseat Boyz with Johnny Kashmere, who died of an accidental drug overdose at his home in Philadelphia less than a month before.  It was the second such event held at the venue following the Pitbull/Public Enemy Memorial Cup, an event The Backseat Boyz had participated at, in 2006.  It was the 106th wrestling event held by CZW in the building, once known as the ECW Arena, surpassing the record number of events held by Extreme Championship Wrestling.  Six professional wrestling matches were featured on the event's card with all the participants being among Acid's closest friends in the industry.

New York Encounter: The New York Encounter is an annual three-day event held in New York City in January, on Martin Luther King's weekend.  It is a cultural event organized by members of the Catholic movement Communion and Liberation; it is composed of conferences, exhibitions, and artistic performances.  The first edition was held in January 2011.  The event follows the consolidated experience gained in Italy from the annual week-long event held in Rimini (Italy), called the Meeting for friendship among peoples, which has become a major event in Italy and attracts intellectuals, scientists, politicians, and religious figures of very high-profile from all over the world.  The NYE is free and is organized with the help of volunteers and many young adults from all over the United States.

Supporting paragraphs: Sieranevada 2016 Cannes Film Festival
Answer: from 11 to 22 May 2016