Given the task definition and input, reply with output. 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.

Leonard Hofstadter: I 'm glad Penny 's dating . Now I can really let loose .
Howard Wolowitz: You were holding back ?
Leonard Hofstadter: Out of courtesy , yes .
Rajesh Koothrappali: What about the ten years before Penny .
Leonard Hofstadter: Hey , I 've date plenty of women .
Howard Wolowitz: Like who ?
Leonard Hofstadter: Well , there 's Joyce Kim , Leslie Winkle ...
Sheldon Cooper: Notify
Sheldon Cooper: the editors of the Oxford English Dictionary : the word " plenty " has been redefined to mean " _ two _ " .
word