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: Charlotte York:  Big is in town ?
Carrie Bradshaw: Yeah , he 's having a little heart thing done .
Miranda Hobbes: What , is he on the wait list to get _ one _ ?
Carrie Bradshaw: No , and you 're going to feel incredibly bad in a minute : he 's here because he 's having heart surgery .
Miranda Hobbes: Okay , I 'm officially a monster , please continue .

heart