Question: Dom & Roland is the alias of British drum and bass producer Dominic Angas and has released records on several labels including 31 Records, Prototype, and Renegade Hardware, and has collaborated with many people including Amon Tobin, who has released how many major studio albums under the London-based Ninja Tune record label?
Sentence (from "Dom &amp; Roland"): The addition of "Roland" in the artist name refers to his Roland sampler.
Relevant evidence: No