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: Dr. Eric Foreman:  We need to remove the eye .
Dr. Gregory House: It 's her only working eye .
Dr. Eric Foreman: We could remove the other _ one _ , but since it 's not killing her , I thought this way was less insane .

eye