instruction:
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.
question:
Birdie:  I haven't got a union . I 'm slave labor .
Margo Channing: Well ?
Birdie: But the wardrobe women have got _ one _ , and next to a tenor , a wardrobe woman is the touchiest thing in show business .
answer:
union


question:
Jo Grant:  What on earth is he doing inside a horsebox ?
Doctor Who: It is n't exactly a horsebox . It just happens to look like _ one _ .
Jo Grant: You mean there is n't a horse inside ?
Doctor Who: No more than there 's a policeman inside my police box .
answer:
horsebox


question:
Cutty:  This is suicide ! And for what ? We have no other bases in this sector .
Captain Garrovick: How many Tressaurians in this sector , Cutty ? You estimated _ twenty _ million .
Cutty: And why do you care after what they 've done ?
answer:

Tressaurians