Detailed Instructions: In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Q: Passage: In 2011, they released a cover of Jay-Z's and Kanye West's "Otis" which helped them rise to fame. The video reached five million views in its first five days of being uploaded to YouTube. However, with much pressure received from Jay-Z's legal team the video was removed from the duo's profile. Undeterred by the controversy, they released a cover of Drake and Lil Wayne's "The Motto", launched their own clothing line called Play Dirty and early into 2012 were invited to join the British rapper Skepta on his tour in the UK. They appeared on Tinie Tempah's 2011 mixtape Happy Birthday and in 2013 they released their third mixtape Young Kingz, with features from Chip, Tinie Tempah, G FrSH, Giggs, George the Poet, Yungen, Ari, Yana Toma, Fekky, Siah and Anthony Thomas. The album's promotional single "Don't Waste My Time" rose to fame in January 2014, with notable artists such as French Montana, Wretch 32, Chip, G FrSH, Double S, Lady Leshurr, Yungen, Sneakbo MNEK, Dru Blu, Jacob Banks and Dot Rotten all contributing to remixes of the track. Tinie Tempah also freestyled over the beat on Charlie Sloth's Fire in the Booth.
Link Information: none Question: How many years after Jay-Z released Otis did Krept and Konan release their cover?

A:
Answer: none