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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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

Ex Input:
Head: PersonX uses PersonY program<sep>Tail: PersonX needs to try a different program

Ex Output:
Yes


Ex Input:
Head: PersonX rules the day<sep>Tail: PersonX starts work

Ex Output:
Yes


Ex Input:
Head: PersonX acquires PersonY interest<sep>Tail: Alluring

Ex Output:

No