Complex sentence: The Royal & Derngate is a two-venue theatre in Northampton, England, formed in 1999 by a merger of the Royal Theatre and the Derngate Theatre and run by the Northampton Theatres Trust.
Split into simpler sentences: The Royal & Derngate is a two-venue theatre located in Northampton, England. Formed in 1999 by an operational merger between the Royal Theatre and the Derngate Theatre, both the venues are now run by Northampton Theatres Trust.