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: President James Heller:  You should have let me take the hit , Jack . I was prepared to die back there .
Jack Bauer: Mr. President , if there was a chance to save your life , I was gon na take it . Five drones are down . She has _ one _ left .
President James Heller: Which is capable of killing thousands of people
Jack Bauer: Not if we get to her first . Sir , where we were an hour ago , I consider this a success .

drones