Vector Space Meetup - Berlin

I need more information to write a compelling blurb. The description is undefined, and the title says "Berlin" but this is for Rally SF (San Francisco). Could you provide: - What actually happens at this Vector Space Meetup? - Why is it titled "Berlin" for an SF event? - Who's speaking or what's the format? - What will attendees learn or build? Without these details, I can't write something specific and valuable.