In context of overlay "Addresses" – house number Tuna Caddesi – node/12399535756 via StreetComplete 59.3:

The address was added by a mistake, I had intention to add a place but the place was named within its street name.

Unable to answer "What’s the name of this street?" – Residential Road – way/627017382 via StreetComplete 60.1:

It belongs to public institution.

Unable to answer "What’s the name of this street?" – Tertiary Road – way/211406693 via StreetComplete 59.3:

There is no street name or label, it is just a turn.