Complex sentence: When acclaimed Indian director Raj Kapoor was at the London reception of his son Rishi Kapoor and Neetu Singh's wedding, he invited his cousin Zarina Agha (Salma's mother) to the reception.
Split into simpler sentences: When acclaimed Indian director Raj Kapoor was at the London reception of his son Rishi Kapoor and Neetu Singh's wedding. He invited his cousin Zarina Agha (Salma's mother) to the reception.