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: Scotty:  Ah . All I can say is they do n't make them like they used to .
Kirk: You told me you could get this ship operational in two weeks , I gave you _ three _ , what happened ?
Scotty: I think you gave me too much time , Captain .
Kirk: Very well , Mr Scott . Carry on .
Scotty: Aye , sir .
Scotty: How
Scotty: many times do I have to tell you , the right tool for the right job !
McCoy: I do n't think I 've ever seen him happier .
Computer: Le
Computer: - le - level ?
Kirk: Bridge ... I hope . I could use a shower .
Spock: Yes .
Example Output: weeks

Example Input: The Dragon:  Ask me two questions , wizard , and I will give you the answers .
Ged: Is n't it usually _ three _ ?
The Dragon: Yes , but with that you 're back to two .
Example Output:
questions