Conversation so far:
When did Roscoe Arbuckle career begin?
He then joined the Pantages Theatre Group touring the West Coast of the United States and in 1906 played the Orpheum Theater in Portland, Oregon
Was Roscoe Arbuckle successfu with the Pantages Theatre Groupl?
Arbuckle became the main act and the group took their show on tour.
How did the tour with the Pantages Theatre Group go for Roscoe Arbuckle?
What did Roscoe Arbuckle do after his return from touring with the Pantages Theatre Group?
Arbuckle began his film career with the Selig Polyscope Company in July 1909

Question: What did he star in?
Self-contained rewrite: What film did Roscoe Arbuckle first star in when he began his film career?