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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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

Ex Input:
Head: PersonX strengthens PersonX's position<sep>Tail: PersonX wins the case against PersonY in court

Ex Output:
Yes


Ex Input:
Head: PersonX takes hold of PersonY<sep>Tail: PersonX tells them everything is okay

Ex Output:
Yes


Ex Input:
Head: PersonX acts as PersonY intermediary<sep>Tail: to want to step in and settle something

Ex Output:

No