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: "Opened in 2008, the airport shut down just four years later."
Wikipedia states the airport 'was opened in 2009, when it became the first private international airport in Spain,' roughly a year after the pin's stored December 19, 2008 date, though it confirms the same broader arc of the 2012 bankruptcy and 2019 reopening described in the pin.
The Guardian's own headline recounts the airport being 'sold for €10,000' after its collapse, part of the same notorious failure the pin describes, published in 2015, about seven years after the pin's stored December 2008 opening date.
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.