Property talk:P542

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officially opened by
person that officially opened the event or place

Description	person that officially opened the event
Data type	Item
Domain	According to this template: event (Q1656682), more commonly multi-sport event (Q167170) According to statements in the property: event (Q1656682), geographic location (Q2221906), fixed construction (Q811430), infrastructure (Q121359), system (Q58778), museum (Q33506), exhibition (Q464980), business (Q4830453), installation artwork (Q20437094) or sculpture (Q860861) When possible, data should only be stored as statements
Allowed values	persons (note: this should be moved to the property statements)
Example	2012 Summer Olympics (Q8577) → Elizabeth II (Q9682) 2008 Summer Olympics (Q8567) → Hu Jintao (Q15029) 1992 Summer Olympics (Q8488) → Juan Carlos I of Spain (Q19943)
Tracking: same	no label (Q42533410)
Tracking: usage	Category:Pages using Wikidata property P542 (Q26678447)
Tracking: local yes, WD no	no label (Q101364631)
See also	unveiled by (P1656)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties By value of property Most statements Fewest statements Most sitelinks Most linked wikis Total of sitelinks on items Most identifiers Fewest identifiers Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P542 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 1,446 Main statement 1,282 88.7% of uses Qualifier 159 11% of uses Reference 5 0.3% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Type “event (Q1656682), geographic location (Q2221906), fixed construction (Q811430), infrastructure (Q121359), system (Q58778), museum (Q33506), exhibition (Q464980), business (Q4830453), installation artwork (Q20437094), sculpture (Q860861)”: item must contain property “instance of (P31)” with classes “event (Q1656682), geographic location (Q2221906), fixed construction (Q811430), infrastructure (Q121359), system (Q58778), museum (Q33506), exhibition (Q464980), business (Q4830453), installation artwork (Q20437094), sculpture (Q860861)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P542#Type Q1656682, Q2221906, Q811430, Q121359, Q58778, Q33506, Q464980, Q4830453, Q20437094, Q860861, SPARQL

Value type “human (Q5)”: This property should use items as value that contain property “instance of (P31)”. On these, the value for instance of (P31) should be an item that uses subclass of (P279) with value human (Q5) (or a subclass thereof). (Help)

List of violations of this constraint: Database reports/Constraint violations/P542#Value type Q5, hourly updated report, SPARQL

Property “sex or gender (P21)” declared by target items of “officially opened by (P542)”: If [item A] has this property with value [item B], [item B] is required to have property “sex or gender (P21)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P542#Target required claim P21, hourly updated report, SPARQL, SPARQL (by value)

This property is being used by: hy:Կաղապար:Տեղեկաքարտ Աստղադիտարան, hy:Կաղապար:Տեղեկաքարտ Օլիմպիական խաղեր, hy:Կաղապար:Տեղեկաքարտ Ցուցահանդես it:Template:Olimpiade Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

only Olympic Games?

IMHO this property could be useful for other sporting events (e.g. FIFA World Cup), and perhaps some other events. Creating a property only Olympic Games can use seems too limited to me. Besides, oath made by (P543) and torch lit by (P545) also have this problem. --Stevenliuyi (talk) 01:30, 25 May 2013 (UTC)

You're totally right, this property can and should be used with other events as well. For the other properties 543 and 545, however, they're very specific to Olympic Games, so I can't see any use apart from the Olympics there.--Kompakt (talk) 07:19, 25 May 2013 (UTC)

As far as I know, P543 and P545 can also be used by other sporting events such as Asian Games (Q483463). Yes, the amount of such events is small, but it's not specific to Olympic Games. Regards,--Stevenliuyi (talk) 12:46, 25 May 2013 (UTC)

Alright. Clearly there's no objections to use these properties with the Asian Games, or with other sport events where torches are lit or oaths are made. I'm still thinking about suitable labels and descriptions.--Kompakt (talk) 13:12, 26 May 2013 (UTC)

I've changed the English and German labels of 543 and 545 to extend the meaning and include other events. Thank you for your remark.--Kompakt (talk) 14:02, 26 May 2013 (UTC)

Beside panem et circenses this property imho also can be used for museums, theaters etc. --P1433-2014 (talk) 03:43, 14 October 2014 (UTC)

Qualifier of P1619

Is it okay to use this as qualifier of date of official opening (P1619)? Sjoerd de Bruin (talk) 13:58, 28 August 2016 (UTC)

Buildings

I use this property for the person who officially opened a new public building. But this is for events only? Can we broaden it to buildings and subclasses? Hannolans (talk) 08:54, 18 October 2017 (UTC)

Brigdes

Can this property be used for persons officialy opening a brigde? Pmt (talk) 00:09, 25 November 2017 (UTC)