The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Happened as dated, per the source: the airport opened on October 31, 2020, ending nearly three decades of delays.
Wikipedia confirms Berlin Brandenburg Airport "opened for commercial traffic on 31 October 2020," noting it was originally planned for October 2011 - nine years earlier - matching the pin's stored date exactly.
The airport's own corporate site redirected to a general press/company landing page that did not itself state the opening date in the fetched content, though it is the airport's own official source, and Wikipedia's[2] account (opened October 31, 2020) corroborates the pin.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most. A picture that shows something else, or shows it badly, is looked at too, and moved down or replaced.