TASK DEFINITION: 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.
PROBLEM: Aaron Hotchner:  There have been two known copycats .
Penelope Garcia: Correct . The first _ one _ was Heriberto Seda . He killed three and wounded four in New York City . And then , there was a 14-year - old in Japan named Seito Sakakibara . He killed two other children and left the sign of the Zodiac behind .
David Rossi: The fact is the Zodiac was driven by a need for notoriety and control .
Aaron Hotchner: He enjoyed the terror he spread through the city .

SOLUTION: copycats

PROBLEM: Ilich Ramírez Sánchez, aka 'Carlos':  I thought Nada was with you .
Wilfried Böse 'Boni': She left . She said she 'd be more useful in Europe with her comrades from June 2nd movement . Yeah .
Ilich Ramírez Sánchez, aka 'Carlos': Good riddance .
Wilfried Böse 'Boni': We were at Wadie Haddad 's .
Ilich Ramírez Sánchez, aka 'Carlos': What 's his verdict ?
Wilfried Böse 'Boni': He hasn't made up his mind yet . But I do n't think he 'll forgive you .
Brigitte Kuhlmann: He wants to launch a new operation . He says he has to erase the failure of the previous _ one _ .
Ilich Ramírez Sánchez, aka 'Carlos': Am I in ?
Wilfried Böse 'Boni': It 's too soon . You are too visible .
Ilich Ramírez Sánchez, aka 'Carlos': He wants me out . Too bad . Too bad for him and too bad for the Palestinian revolution .
Wilfried Böse 'Boni': I am incharge of the mission . Brigitta will back me up and Anton will take care of logistics .
Brigitte Kuhlmann: The security checks on El - Al are too strict , we 've chosen an Air France flight . We 'll be doing it soon .
Wilfried Böse 'Boni': Is he upset ?

SOLUTION: operation

PROBLEM: Penny:  How ' bout we buy you this robot , and then we all go home .
Sheldon Cooper: I want that one .
Penny: Okay , you can have that _ one _ .
Leonard Hofstadter: Oh , come on ! He 's just going to play with it twice , and it 'll end up in his closet with all the other junk .
Penny: Buy him the robot , Leonard .
Sheldon Cooper: Can I get this comic book too ?
Penny: Yes , you can .

SOLUTION:
robot