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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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 holds PersonY's gaze<sep>Tail: PersonX sees an old friend

Ex Output:
Yes


Ex Input:
Head: PersonX achieves PersonY goal<sep>Tail: to work hard towards the goals set by PersonY

Ex Output:
No


Ex Input:
Head: PersonX would be fired<sep>Tail: PersonX makes an error at work

Ex Output:

Yes