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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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 smells very bad<sep>Tail: PersonX skipped the shower this morning

Ex Output:
Yes


Ex Input:
Head: PersonX acts as PersonY intermediary<sep>Tail: talks

Ex Output:
No


Ex Input:
Head: PersonX acknowledges gratefully the ___<sep>Tail: for them to do well

Ex Output:

No