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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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

Head: PersonX gets a degree<sep>Tail: PersonX puts in applications at several tech companies
Yes

Head: PersonX puts it up for sale<sep>Tail: PersonX makes a nice profit from the sale
Yes

Head: PersonX creates PersonY system<sep>Tail: PersonX and PersonY use the new system

Yes