Definition: You will be given three sentences. Read them, then identify a noun phrase (person, place, or thing) or event that is shared between all three sentences. As the output, write the span of the text corresponding to that phrase in each sentence. Keep the order of the sentences, that is, your answer should look like: 1: *a phras from sentence 1e* 2: *a phras from sentence 2* 3: *a phrase from sentence 3*
Input: 1: The 46-year-old pop star will be performing a 90-minute show of her hits at the  world 's richest day of horse racing  -- the 20th Dubai World Cup hosted at Meydan on Saturday , March 28 . 2: Prize money totaling $ 30 million will be up for grabs over a variety of races , culminating in a top prize of $ 10m in the Dubai World Cup race -- a rendition of Minogue 's  I should be so lucky  would certainly be apt . 3:  The world 's richest day of horse racing  will see prize money worth approximately $ 30m up for grabs .

1: the `` world 's richest day of horse racing '' -- the 20th Dubai World Cup 2: the Dubai World Cup race 3: The world 's richest day of horse racing