In this task, you will use your knowledge about language (and common sense) to determine what element the marked number refers to. The numbers are marked with two underlines around them, like: _ number _. Your answer should be chosen from the given text, and should not contain other words.

Example Input: Esfandiar Mashaei: We have 2 or 3 centrifuges , they say should n't have these _ three _ , but another day we have 2300 and they say it 's enough , no problem . what 's happened ? Their nature changed ? No , they 're submitted .
Example Output: centrifuges

Example Input: Ms. Morris: Ladies . Why are n't you exercising with the rest of the class ?
Jane Lane: We are exercising .
Daria Morgendorffer: We 're exercising our right to abstain from cheerleader practice .
Ms. Morris: That 's not cheerleading , it 's agility . Jane Lane , you 're just like your sisters , are n't you ?
Jane Lane: We share certain chromosome pairs . Beyond that , I 'm not supposed to say .
Ms. Morris: You know what I mean . Ca n't be part of a group . Always have to be different . Your sister Penny never wanted to participate , either . I taught her a thing or _ two _ about the American competitive spirit .
Jane Lane: You sure did . That 's why she 's spent the last ten years out of the country .
Example Output: thing

Example Input: Det. Ray Vecchio: So what 's the emergency ?
Fraser: Well , I 've been assigned to escort the daughter of Canada 's senior trade negotiator .
Det. Ray Vecchio: The _ one _ in the green dress dancing with the doofus ?
Fraser: He 's the American ambassador 's son .
Det. Ray Vecchio: Looks like a very painful experience .
Fraser: Well , dancing with the Americans often is , Ray . Speaking politically , of course , not personally .
Example Output:
daughter