instruction:
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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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.
question:
Head: PersonX waves PersonY's hands<sep>Tail: PersonX sees their friend
answer:
Yes


question:
Head: PersonX changes PersonY's ways<sep>Tail: PersonX brings up facts during an argument
answer:
Yes


question:
Head: PersonX accompanies by PersonY's wife<sep>Tail: to enter the hall
answer:

No