Complex sentence: Helene's fleeing from Paris as the Germans advanced is based on Beauvoir's own actions-in June 1940 she travelled with friends by car to Laval and then by coach to Angers.
Split into simpler sentences: Helene's fleeing from Paris as the Germans advanced is based on Beauvoir's own actions. In June 1940 she travelled with friends by car to Laval and then by coach to Angers.