Question: Tobias “Toby” Gad is best known for co-writing which song by American singer John Legend from his fourth studio album "Love in the Future" (2013)?
Sentence (from "Toby Gad"): Tobias “Toby” Gad (born 12 April 1968) is a Los Angeles-based German music producer/songwriter, best known for co-writing John Legend's biggest hit "All of Me" and for co-writing and producing "Big Girls Don't Cry" by Fergie and "If I Were a Boy" by Beyoncé.
Relevant evidence: Yes