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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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, as a result of the Head, PersonX may feel what is mentioned in the Tail or not. In this task, the feeling is an emotional reaction on the part of X or other participants in an event. For example, as a result of gift-giving, X might feel good about [one]self. 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.

[EX Q]: Head: PersonX agrees to the challenge<sep>Tail: Participate in challenge
[EX A]: No

[EX Q]: Head: PersonX holds PersonY's ground<sep>Tail: vindicated
[EX A]: Yes

[EX Q]: Head: PersonX achieves ___ by means<sep>Tail: demands perfection
[EX A]:
No