Question: Who is affiliated with more bands, Ronnie James Dio or Luca Prodan?
Sentence (from "Metal Hits (Dio album)"): Multi-instrumentalist and heavy-metal mainstay Ronnie James Dio built up a hefty back catalog over the decades, with a career that spans vocalizing for Rainbow, Black Sabbath, and of course, his own group, Dio.
Relevant evidence: No