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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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

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

Output: No


Input: Consider Input: Head: PersonX gets a scholarship to college<sep>Tail: PersonX achieves good grades in high school

Output: Yes


Input: Consider Input: Head: PersonX sets a flag on the moon<sep>Tail: PersonX walks on the moon


Output: Yes