Complex sentence: In 1978 he had joined the theatre group of Gursharan bhaji as an artist and worked there for ten years । in 1988 Kewal Dhaliwal joined National School of Drama and learned Theatrical skills there.
Split into simpler sentences: In 1978 he had joined the theatre group of Gursharan bhaji as an artist and worked there for ten years. In 1988 Kewal Dhaliwal joined National School of Drama and learned Theatrical skills there.