Unable to answer "What kind of building is this?" for https://osm.org/way/495054190 via StreetComplete 53.3:

It is not a building it is parking lot in walled yard.

Unable to answer "What’s the surface firmness of this track?" for https://osm.org/way/985557767 via StreetComplete 48.0:

Wooden bridge

Not a house. Fenced utility place for water suply.

via StreetComplete 5.2

It is merely a walk path. No car could drive there.

via StreetComplete 5.2