Task: Explanation
Input (English): Vicky Psarakis is a Greek American vocalist, best known as the vocalist of Canadian metal band, the Agonist. She joined in 2014 after original vocalist and co-founder Alissa White-Gluz was asked to leave the band after joining Arch Enemy. She has released one EP titled "Disconnect Me" and two albums titled "Eye of Providence" and "Five" with the Agonist. Question:  Vicky Psarakis joined the Agonist after what original vocalist and co-founder born in 1985 was asked to leave Answer: Alissa White-Gluz
Output (English):  She joined in 2014 after original vocalist and cofounder Alissa WhiteGluz was asked to leave the band after joining Arch Enemy.