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 The names of specific people have been replaced by generic words (e.g., PersonX, PersonY, PersonZ).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 is used for the Tail or not. The usage describes everyday affordances or uses of objects and includes both typical and atypical uses. For example, a popcorn bucket can typically be used to hold popcorn, but it could also serve as a hat in atypical situations. 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.
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Question: Head: guidebook<sep>Tail: study the basic techniques

Answer: Yes


Question: Head: PersonX always watch ___<sep>Tail: to make sure it's safe

Answer: No


Question: Head: copy machine<sep>Tail: go and use

Answer:
Yes