Complex sentence: He did his schooling from St. Columba's School, Delhi and passed out in 1980.He obtained a Bachelor of Arts degree in Economics from St. Stephen's College, Delhi, (Delhi University) in 1984.
Split into simpler sentences: He did his schooling from St. Columba's School, Delhi and passed out in 1980. Thereafter, he obtained a Bachelor of Arts degree in Economics from St. Stephen's College, Delhi, (Delhi University) in 1984.