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: An adorably informal happy family portrait, it is the perfect choice to adorn the Duke and Duchess of Cambridge’s Christmas card. And it is sure to delight all those lucky enough to receive one. But for many older relatives it will also be a trip down memory lane. For while two-and-a-half-year-old George looks just like his father at that age, Charlotte is the spitting image of her mother as a baby. The informal family portrait was taken by photographer Chris Jelf – described as a ‘friend of a friend’ – in the couple’s private garden at Kensington Palace in October.Kate and Wills have informal family portrait done at Kensington PalaceImage shows striking similarities with Charlotte and Kate as a one-year-oldOriginally private photo shoot ends up producing pose for greeting cardSee more of the latest news on the Duke and Duchess of Cambridge 
 Question:It can be seen on the grass next to another sign that the children needed a little persuasion to keep them happy and still – _’s red toy train.

George