Complex sentence: With the encouragement of her parents, she enrolled in the Pennsylvania Academy of Fine Arts in 1920 and for the next three years she studied under Daniel Garber, Hugh Breckenridge, and Arthur Carles.
Split into simpler sentences: With the encouragement of her parents, she enrolled in the Pennsylvania Academy of Fine Arts in 1920. For the next three years she studied there under Daniel Garber, Hugh Breckenridge, and Arthur Carles.