"Must have been a temporary food truck"
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2023-09-20T00:34:57Z
POI name: Crystal Dog
POI types: amenity-fast_food
#organicmaps android

This business is called the Byward Nut House, not the Bytown Nut House, and the address is 59 York Street.

Unable to answer "Do you have to pay to park here?" for way/834263097 via StreetComplete 37.2:

private parking

onosm.org submitted note from a business:
name: Palapa Tours
phone: 8192724977
website: www.palapa.tours
twitter: @ottawatikitours
facebook: https://facebook.com/OttawaTikiTours/
email: Info@palapa.tours
hours:
category: Tours
address: 160 Rue Laurier

On-site confirmation required: According to municipal planning documents the cycleway on de Mentana between Laurier and Saint-Grégoire was schedule to be updated to a bidirectional cycle track/lane in 2023.
Source: https://projetmontreal.org/assets/common/Fiche-Technique-Programmation-cyclable-2023.pdf

"-ent" not "-ant"

Barrage des Quinze

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2930 m di altitudine. È stato dichiarato il vulcano più attivo attivo dell'indonesia.
Kaliurang è il principale punto di accesso da cui partire per ammirare il panorama. (OSM data version: 2016-07-15T17:38:02Z) #mapsme

Balai Desa, Desa Samiran, Selo, Boyolali