Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: When eight-year-old Mohammed bin Ahmed Jaber Al Harbi approached the Queen for a handshake at the Derby, he melted hearts around the world. Now, the little boy has returned to the UK for Royal Ascot and appeared clutching the hand of Sheikh Mohammed bin Rashid Al Makhtoum, the 65-year-old Emir of Dubai. Walking right behind him was his 'best friend', the emirate's dapper Crown Prince Hamdan, 32, and the royal's step-mother, Princess Haya of Jordan, 41. Mohammed is the son of Ahmed Jaber 'AJ' Al Harbi, a close friend of the Emirati prince, and spends much of his time travelling the world with his father and the royal.Mohammed bin Ahmed Jaber Al Harbi was at Royal Ascot todayLittle boy melted hearts when he shook hands with the Queen at DerbyWas back in his top hat and tailcoat and joined Emirati royal party 
 Question:Indeed, this is the eight-year-old's second visit to _, having been part of the party to take part in last year's event.

Royal Ascot