Complex sentence: Abhishek Bachchan is the son of Amitabh Bachchan and actress Jaya Bachchan, his elder sister is Shweta Bachchan-Nanda (b.1974).
Split into simpler sentences: Abhishek Bachchan is the son of Amitabh Bachchan and actress Jaya Bachchan. His elder sister is Shweta Bachchan-Nanda (b.1974).