Question: The Legends of the Summer Stadium Tour was a co-headlining concert tour by American singer-songwriter Justin Timberlake and American rapper Jay Z, the tour supported  Jay Z's twelfth studio album, it was released for retail sale on which date, by Roc-A-Fella, Def Jam and Roc Nation?
Sentence (from "Magna Carta Holy Grail"): It was made available for free digital download for Samsung customers via the Jay-Z Magna Carta app on July 4, 2013.
Relevant evidence: Yes