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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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 before 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.

Example Input: Head: PersonX laughs hysterically<sep>Tail: PersonX rewinds movie to watch funny part again
Example Output: Yes

Example Input: Head: PersonX accidentally broke ___<sep>Tail: to fix it
Example Output: No

Example Input: Head: PersonX plays a part in regulating<sep>Tail: PersonX signs a contract for the city
Example Output:
Yes