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.
A target, per the source: "current forecasts predict that Kansai could drop below sea level by 2056 if it continues sinking at the current rate."
AeroTime directly supports the pin's claim, reporting "current forecasts predict that Kansai could drop below sea level by 2056 if it continues sinking at the current rate" - an exact match to the pin's stored date, though framed as a worst-case scenario rather than a certainty.
NASA's Earth Observatory confirms Kansai Airport "suffers from subsidence, sinking 2-4 centimeters per year," supporting the pin's underlying sinking claim, though the page does not itself project a below-sea-level date, so it only tangentially backs the pin's stored 2056 estimate.
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.