Complex sentence: Between 1961 and 1977 it was known simply as the ABC after ABC Cinemas; who took over ownership of the premises in the mid- 1930s, this changed to the Astra when the venue was taken over by Hutchinson Leisure.
Split into simpler sentences: Between 1961 and 1977 it was known simply as the ABC; after ABC Cinemas who took over ownership of the premises in the mid- 1930s. This changed to the Astra when the venue was taken over by Hutchinson Leisure.