Wikidata:Property proposal/Opera Online opera house ID

Description	identifier of a opera or theater on Opera Online website
Represents	Opera Online (Q96034469)
Data type	External identifier
Domain	opera house (Q153562)
Allowed values	[a-z][a-z0-9-]+
Example 1	Salle Favart (Q47419907) → opera-comique--3
Example 2	Vienna State Opera house (Q209937) → wiener-staatsoper
Example 3	Teatro La Fenice (Q223942) → teatro-la-fenice
Source	https://www.opera-online.com/en/items?utf8=%E2%9C%93&q=&filters%5Bincl%5D%5Bitem%5D%5B%5D=opera_house
Number of IDs in source	232
Expected completeness	eventually complete (Q21873974)
Formatter URL	https://www.opera-online.com/en/items/opera_houses/$1
See also	Corago opera ID (P5251), Operone opera ID (P5358), Opera Vivra singer ID (P4407), Operabase ID (P4869)

Opera Online seems to be an important database about opera. It offers useful information about opera houses. Pamputt (talk) 21:41, 11 June 2020 (UTC)[reply]

Support we already have Corago opera ID (P5251), Operone opera ID (P5358), Opera Vivra singer ID (P4407), Operabase ID (P4869) -- how is this different/adds value? Is the property covered by any of these databases already or do non of them cover opera houses? --Hannes Röst (talk) 18:25, 1 July 2020 (UTC)[reply]
All theses properties are for the opera works (or people). None is for the building. So, clearly this proposal fills a void (I did not check whether we already have other identifiers for opera houses). Opera Online offers the location of the opera houses and also, sometimes, some encyclopedic description (see Wiener Staatsoper for example). Pamputt (talk) 22:11, 2 July 2020 (UTC)[reply]
Support DrThneed (talk) 02:53, 19 August 2020 (UTC)[reply]
Support —Eihel (talk) 17:38, 22 August 2020 (UTC)[reply]