Complex sentence: Her early films gave her the grounding in character development that she needed in order to tackle more substantial roles later on in her career, including her seminal 1968 guest-role in the' episode "By Any Other Name".
Split into simpler sentences: Her early films gave her the grounding in character development that she needed in order to tackle more substantial roles later on in her career. In 1968, she guest-starred in the' episode "By Any Other Name".