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.

Ex 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 .

Ex Output:
trains


Ex Input:
Jennifer Goines:  Tell me what happens . How does this end ?
James Cole: There are many endings .
Jennifer Goines: Which is the right one ?
Future Jennifer: The right one ...
James Cole, Future Jennifer: ... is the _ one _ you choose .

Ex Output:
endings


Ex Input:
Cmdr. Drury:  Smart , you appear to be in pretty good shape , do you work out ?
Maxwell Smart: I jog one hundred miles every day ! Would you believe it ? One hundred miles !
Cmdr. Drury: I find that hard to believe .
Maxwell Smart: Would you believe _ fifty _ ?
Cmdr. Drury: No !
Maxwell Smart: How about two push ups and a deep breath ?

Ex Output:

miles