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: Romana:  They taught me at school how to stop my hearts .
Tyssan: Hearts ? How many have you got ?
Romana: _ One _ for casual , one for best .

hearts