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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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 gets PersonY's phone<sep>Tail: PersonX calls home to see if his phone is there

SOLUTION: Yes

PROBLEM: Head: PersonX accidentally left ___<sep>Tail: to check the lost and found

SOLUTION: No

PROBLEM: Head: PersonX covers PersonY's expenses<sep>Tail: PersonX tells PersonY they don't have to pay them back

SOLUTION:
Yes