GeFA

Could you clarify what you mean by "gefa"? The term could refer to multiple different things (an organization, a geographic name, a project, an acronym in a specific field, etc.). If you specify which GeFA you have in mind, I can generate a concise, neutral wiki-style article under 300 words. If you’d like a general disambiguation-style stub that covers possible uses without committing to a single definition, I can provide that as well.