In this task, you are given two phrases: Head and Tail, separated with <sep>. The Head and the Tail events are short phrases possibly involving participants. The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ). PersonX is always the subject of the event. You have to determine whether the Head happens after the Tail or not. Classify your answers into "Yes" and "No". The phrase may also contain "___", a placeholder that can be an object, a person, and/or an action.

Input: Consider Input: Head: PersonX fights for PersonY's country<sep>Tail: PersonX joins the navy

Output: Yes


Input: Consider Input: Head: PersonX starts reading<sep>Tail: PersonX opens a book

Output: Yes


Input: Consider Input: Head: PersonX watches PersonY's favorite show<sep>Tail: PersonX gets home from work


Output: Yes