Complex sentence: Jasmine O'Brien is the daughter of Disa O'Brien (Jan Graveson), who gives birth to her daughter alone, in a derelict building, on Christmas Day 1990.
Split into simpler sentences: Jasmine O'Brien is the daughter of Disa O'Brien (Jan Graveson). Disa gives birth to Jasmine alone, in a derelict building, on Christmas Day 1990.