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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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 gets a degree<sep>Tail: PersonX puts in applications at several tech companies

Ex Output:
Yes


Ex Input:
Head: PersonX accomplishes PersonY's work<sep>Tail: lacking

Ex Output:
No


Ex Input:
Head: PersonX tells PersonY do not know<sep>Tail: PersonX hears PersonY ask another question

Ex Output:

Yes