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: Leonard Hofstadter:  So , should we talk about setting a date ?
Penny: Well , I 'd like to pick _ one _ that works with my brother 's schedule .
Leonard Hofstadter: Okay . And when would that be ?
Penny: Uh , 12 to 18 months from now depending on good behaviour .

date