Question: What form of theater do Sean Pol McGreevy and Mack and Mabel have in common?
Sentence (from "Mack and Mabel"): The plot involves the tumultuous romantic relationship between Hollywood director Mack Sennett and Mabel Normand (transformed from an artist's model to a waitress from Flatbush, Brooklyn for the musical), who became one of his biggest stars.
Relevant evidence: No