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:
Thea Queen:  A bunch of superheroes in a farmhouse ? I feel like I 've seen that in a movie before .
Oliver Queen: We need a secure location .
Caitlin Snow: What 's wrong with S.T.A.R. Labs ?
Oliver Queen: Well , I mean , absolutely nothing if you forget about the revolving doors you installed so the bad guys to come and go as they please .
Caitlin Snow: Remind me again what happened to your old lair , or the _ one _ before that .
Felicity Smoak: Well , lair number one was compromised by the police , and ...
Felicity Smoak: I
Felicity Smoak: will stop helping .

Ex Output:
lair


Ex Input:
King Tut:  Curse you , Batman . May you fall down a flight of stairs and break every tooth in your head except _ one _ and in that may you have a toothache for the rest of your life which wo n't be very long .

Ex Output:
tooth


Ex Input:
Vala Mal Doran:  Our only chance is to take this ship back .
Lt. Col. Samantha Carter: I have an idea about that , but it 's pretty risky .
Vala Mal Doran: It 's probably better than our plan .
Lt. Col. Samantha Carter: Well , what 's your plan ?
Dr. Daniel Jackson: We do n't have _ one _ .

Ex Output:

plan