Ser is used in a simple way, to talk about WHAT something is (permanent state). To describe characteristics that are an essential part of the thing we're talking about. Estar is used to talk about HOW something is, so we use it for conditions, locations, emotions, and actions (temporary states).
Answer:
Am I supposed translate it?
We don’t have any view of the article, so we have no context as to what the purpose is.
