TASK DEFINITION: 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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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 before 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.
PROBLEM: Head: PersonX visits canada<sep>Tail: PersonX stays in toronto

SOLUTION: Yes

PROBLEM: Head: PersonX is proud of what PersonY had done<sep>Tail: PersonX gives the report card back to him

SOLUTION: Yes

PROBLEM: Head: PersonX accompanies by PersonX's wife<sep>Tail: Drops him off at his friends.

SOLUTION:
No