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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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 gets groceries<sep>Tail: PersonX goes to the grocery store
Example Output: Yes

Example Input: Head: PersonX accepts without question<sep>Tail: to feel confident in decision
Example Output: No

Example Input: Head: PersonX becomes PersonY's president<sep>Tail: PersonX runs for president of PersonY's country
Example Output:
Yes