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: They are a very sporty family, so it's no surprise that the Middletons have been familiar faces at Wimbledon this week. Carole and Michael attended their second day of the tournament today, sitting in the stands of Court 1 to watch Roger Federer beat Gilles Simon in their men's quarter-finals match. Over on Centre Court, their daughter Kate was with her husband Prince William in the Royal Box to watch Andy Murray reached his sixth Wimbledon semi-final in seven years by beating Vasek Pospisil. Carole, 60, looked elegant in a green fitted shirt dress, which she wore with yellow and white wedged sandals, while her husband was more conservative in a blue shirt and blazer.Carole and Michael Middleton attended Wimbledon todayIt is the couple's second visit in a week, after also visiting last FridayThe Middletons are big fans of the event - Kate also attended todayPippa and James were spectators at the tournament on Monday 
 Question:Three days later and it was the younger _' turn at the tennis.

Middletons