Personnel: Demis Hassabis at Google DeepMind (CEO & Co-founder)

NoteThe source directly confirms all key fields in the record: (1) person = Demis Hassabis ✓, (2) org = Google DeepMind (referred to as both 'DeepMind' and 'Google DeepMind' in the source) ✓, (3) role = CEO & Co-founder ✓, (4) startDate = 2010 ✓. The source explicitly states DeepMind was 'founded in London in 2010' and that Hassabis is 'the chief executive officer and co-founder.' The record's startDate of '2010-09' (September 2010) is more specific than the source's year-only reference, but the source does not contradict this — it simply provides less precision. This is consistent with the guidance that partial precision is not a contradiction.