question: I hvilken sæson bliver elena til vampyr i vampire diaries?
answers.text: fjerde
context: Elena Gilbert
  En stor del af Elenas historie drejer sig om hendes forhold til vampyrerne Stefan Salvatore og hans storebror Damon. Det afsløres, at Elena er en Petrova Doppelgänger, som således er ansvarlig for, at hun er identisk med sin forfader, Katherine Pierce (født Katerina Petrova). Dette har også den konsekvens, at det gør hende til et overnaturligt væsen. Dobrev portrætterede også den "snedige" Katherine, som er modsat Elena. Skuespillerinden udtalte, at det har været en udfordring at skelne de to, og hun nyder at spille dem begge. I tv-seriens fjerde sæson bliver Elena en vampyr og håndterer de kampe, der følger med hendes forandring. Hun tog kuren og blev menneske igen mod slutningen af sjette sæson. I finalen af den sjette sæson forbandt Kai Elena med Bonnies liv ved hjælp af magi. Elena vil først vågne op, når Bonnie dør om ca. 60 år. Hun blev låst inde i Salvatore-graven, som blev ændret i den syvende sæson, og blev flyttet til Brooklyn, New York. I slutningen af 2016, da det blev annonceret, at den ottende sæson ville være den sidste sæson, var Dobrev i forhandlinger om at vende tilbage til tv-serien for at gentage sin rolle i det sidste afsnit. Efter mange spekulationer. Dobrevs tilbagevenden blev bekræftet den 26. januar 2017 via et Instagram-opslag. Dobrev optrådte i det sidste afsnit af serien som både Elena og hendes onde dobbeltgænger Katherine Pierce.
answers_en.text: fourth
context_en: Elena Gilbert
  Much of Elena's story revolves around her relationships with vampires Stefan Salvatore and his older brother, Damon. It is revealed that Elena is a Petrova Doppelgänger, which is thus responsible for her being identical to her ancestor, Katherine Pierce (née Katerina Petrova). This also has the implication of making her a supernatural creature. Dobrev portrayed the "conniving" Katherine as well, who is opposite of Elena. The actress stated that it has been a challenge distinguishing the two, and enjoys playing them both. In the television series's fourth season, Elena becomes a vampire and deals with the struggles that come with her change. She took the cure and became human again towards the end of the sixth season. In the finale of the sixth season, Kai linked Elena to Bonnie's life by magic. Elena will only wake up when Bonnie dies in around 60 years. She was locked inside the Salvatore tomb, which was changed in the seventh season, and was relocated in Brooklyn, New York. In late 2016, when it was announced that the eighth season would be the final season, Dobrev was in talks about returning to the television series to reprise her role in the final episode. After much speculation. Dobrev's return was confirmed on January 26, 2017, via an Instagram post. Dobrev appeared in the final episode of the show as both Elena and her evil doppelgänger Katherine Pierce.
title_en: Elena Gilbert