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: She sat her first Math GSCE exam , a British high school qualification , at Ounsdale High School in Wolverhampton at just six , where she received a C-grade . 2: Then last year she scored a B-grade when she sat the Math A-level exam . 3: Took A-level exams , a British secondary school qualification , last year .

1: her first Math GSCE exam 2: the Math A-level exam 3: A-level exams