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: Lucky:  I know you 're smart , Spot , but how do you handle pressure ? Solve this simple word problem in say , thirty seconds .
Spot: Ah - ha , no problem ! Two trains are heading toward each other , _ one _ at twenty - five miles an hour and the other at forty . They 're fifty miles apart and getting closer on the same track , but with no time to throw the switch , they collide , head on . All aboard perish and it 's all my fault !
Lucky: Next .
Example Output: trains

Example Input: Two:  Why was I created ?
Alexander Rook: The answer to that question is part of a much bigger conversation . And _ one _ that we will have , in due time .
Example Output: conversation

Example Input: T.E. Lawrence:  Henry , do n't forget me .
Indiana Jones: I wo n't .
T.E. Lawrence: Will you write ?
Indiana Jones: I will .
T.E. Lawrence: We gave the old men victory and they threw it away , we offered them a new world and they made the old _ one _ over again . Still , it might have been worse .
Indiana Jones: What ?
T.E. Lawrence: I said , might have been worse !
Example Output:
world