TASK 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*
PROBLEM: 1: The latest example : Nine seconds of video of a number of boys singing an offensive song . 2: Immediately , the University of Oklahoma expelled two of the boys for their speech . 3: University of Oklahoma students were expelled after video surfaced of racist song .

SOLUTION: 1: an offensive song 2: their speech 3: racist song

PROBLEM: 1: Here are three major obstacles that are hampering efforts of distribution . 2:  Due to the mountainous geography , infrastructure damage , collapsed bridges and damaged roads , access to many of the affected areas is reported to be extremely limited ,  read the report . 3: Damaged roads and infrastructure have hampered distribution efforts and rescue teams trying to access remote areas .

SOLUTION: 1: three major obstacles that are hampering efforts of distribution 2: the mountainous geography , infrastructure damage , collapsed bridges and damaged roads 3: Damaged roads and infrastructure

PROBLEM: 1: ( CNN ) The police may have found the missing dress . 2: The L.A . Sheriff 's Department got a tip Friday and looked in an abandoned bathroom on the second floor of the same London Hotel , the department said in a press release . 3: Los Angeles authorities got a tip and found a dress that looked like hers in a hotel bathroom .

SOLUTION:
1: The police 2: The L.A . Sheriff 's Department 3: Los Angeles authorities