Question: What is the date of birth of the performer of song Really Don'T Care?
Sentence (from "Demi Lovato"): Her struggles with several personal issues have received significant media attention in the 2010s; in response to which in response to which she published the book "Staying Strong: 365 Days a Year" (2013), and released a YouTube documentary about her life and career,  (2017).
Relevant evidence: No