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: ( CNN ) About 20 hours after the Boston Marathon started Monday , many of the cheering crowds had dispersed and the streets were cleared . 2: He was the last participant to complete the race , CNN affiliate WCVB-TV reported . 3: He completed the race 20 hours after the start .

1: the Boston Marathon 2: the race 3: the race