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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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 loses PersonX's position<sep>Tail: PersonX has to walk to the back of the line

Ex Output:
Yes


Ex Input:
Head: PersonX puts it up for sale<sep>Tail: PersonX makes a nice profit from the sale

Ex Output:
Yes


Ex Input:
Head: PersonX calls upon the name<sep>Tail: PersonX marks student as present

Ex Output:

Yes