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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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 activates a shadow over everyone<sep>Tail: looming

Ex Output:
No


Ex Input:
Head: PersonX takes medicine in the future<sep>Tail: PersonX buys medicine

Ex Output:
Yes


Ex Input:
Head: PersonX injures their leg badly<sep>Tail: PersonX fell down the stairs

Ex Output:

Yes