Complex sentence: As a director and screenwriter, Khwaja Ahmad Abbas is considered one of the pioneers of Indian parallel or neo-realistic cinema, and as a screenwriter he is also known for writing Raj Kapoor's best films.
Split into simpler sentences: As a director and screenwriter, Khwaja Ahmad Abbas is considered one of the pioneers of Indian parallel or neo-realistic cinema. And as a screenwriter, he is also known for writing Raj Kapoor's best films.