Question: According to Katy Perry, California Gurls is an answer song to what song by Jay-Z that featured vocals by Alicia Keys?
Sentence (from "New Zealand Top 50 singles of 2010"): You Got Me being the first New Zealand annual number 1 single in 6 years since Ben Lummis's "They Can't Take That Away", and Scribe becoming the first artist ever to have 2 year end number 1 singles the other being "Stand Up/Not Many".
Relevant evidence: No