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.
Input: Margaret Wyborn:  My hair hurts .
Linda: Margaret , why do n't you just go home ?
Margaret Wyborn: That 's okay , I 'll make it , but I do want to thank you , Linda , you have really been on top of things today . But it makes me wonder , why ca n't you be like this every day ?
Linda: Because this was an emergency . You see , Margaret , I 'm like that cute little spare tire , the one you use when the real _ one _ blows out .
Margaret Wyborn: Still , it 's good to know that I can count on you .
Linda: Well , do n't go crazy . That little tire 'll get you to the next gas station , but it 's a really bad idea to drive it cross country .
Margaret Wyborn: Got it .

tire