Complex sentence: Pearl Argyle (1910-1947) was a dancer and actor, including lead roles in productions for the Ballet Rambert and Vic-Wells Ballet (now the Royal Ballet), in stage musicals and in films such as H. G. Wells' Things to Come.
Split into simpler sentences: Pearl Argyle (1910-1947) was a dancer and actor. Her career included leading roles in productions for the Ballet Rambert and Vic-Wells Ballet (now the Royal Ballet), in stage musicals and in films such as H. G. Wells' Things to Come.