Question: Which rapper put out an album that featured a guest appearance from a hip hop artist that had won Best Grime Act at the 2014 and 2015 MOBO Awards?
Sentence (from "Novelist (MC)"): Kojo Kankam (born 20 January 1997), better known by his stage name Novelist, is an English grime MC and producer from Lewisham in South London.
Relevant evidence: No