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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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

Example Input: Head: PersonX changes people 's bed sheets<sep>Tail: PersonX goes to their job at the hotel
Example Output: Yes

Example Input: Head: PersonX takes medicine in the future<sep>Tail: PersonX buys medicine
Example Output: Yes

Example Input: Head: PersonX activates a shadow over everyone<sep>Tail: person x is the most power
Example Output:
No