way/390376352/history has a = 110

What was intended to express by using this unusual key? Is this tag needed?
Or maybe can it be expressed in a more typical way that would be easier to understand?
Or maybe this key can and should be documented as useful tagging schema?

wikimedia_commons=Category:Hakodate Gokoku-jinja

way/389132875/history has a = 1

What was intended to express by using this unusual key? Is this tag needed?
Or maybe can it be expressed in a more typical way that would be easier to understand?
Or maybe this key can and should be documented as useful tagging schema?

世界平和統一家庭連合 札幌白石家庭教会

The place has gone or never existed. This is an auto-generated note from MAPS.ME application: a user reports a POI that is visible on a map (which can be outdated), but cannot be found on the ground.
POI has no name
POI types: amenity-vending_machine-drinks
OSM data version: 2017-12-08T15:42:02Z
#mapsme

世界平和統一家庭連合 札幌南家庭教会

Orphanage

missing cafe building and parking lot

via StreetComplete_ee 56.1