Complex sentence: Pocock's first piece was a musical farce in two acts, entitled "Yes or No." It was produced at the Haymarket on 31 August 1808, and acted ten times.
Split into simpler sentences: Pocock's first dramatic work was a musical farce in two acts, entitled "Yes or No". It opened at the Haymarket Theatre, in London on 31 August 1808, and was performed ten times.