Question: Robert Rihmeek Williams, aka Meek Mill, appeared in the 2015 tour of which major recording artist?

Related documents: [0]  [DOC] The Pinkprint Tour was the third concert tour by Trinidadian recording artist Nicki Minaj in support of her third studio album, "The Pinkprint" (2014). The tour was officially announced a week before the album's release, on December 8, 2014. The tour began on March 16, 2015 in Stockholm, Sweden and concluded on August 23, 2015 in Wantagh, New York, finishing with a total of fifty shows over the span of 5 months. The first European leg of the tour was supported by Trey Songz and Ester Dean and received mixed to positive reviews from critics, while the second North American leg was supported by Meek Mill, Rae Sremmurd, Tinashe, and Dej Loaf. The Pinkprint Tour grossed $22 million from 38 shows. [END] 
[1]  [DOC] Robert Rihmeek Williams (born May 6, 1987), better known by his stage name, Meek Mill, is an American hip hop recording artist. Raised in Philadelphia, he embarked on his music career as a battle rapper, and later formed a short-lived rap group, The Bloodhoundz. In 2008, Atlanta-based rapper T.I. signed Meek Mill to his first record deal. In February 2011, after leaving Grand Hustle Records, Mill signed with Miami-based rapper Rick Ross's Maybach Music Group (MMG). Mill's debut album, "Dreams and Nightmares", was released in 2012 under MMG and Warner Bros. Records. The album, preceded by the single "Young & Gettin' It", debuted at number two on the U.S. "Billboard" 200. [END]  
Answer: Nicki Minaj
Nicki Minaj