Question: Who is this American rapper and actor who was one of the best-selling music artists of all time and worked on the 1995 song Runnin' from tha Police with a few other artists?
Sentence (from "Runnin' from tha Police"): The song is significant, being one of very few compositions 2Pac and The Notorious B.I.G. created together, as later hostility arose between the two rappers, ending all possible collaborations and inciting the East-West Coast Rivalry.
Relevant evidence: No