Property talk:P2978

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wheel arrangement
wheel/axle arrangement for locomotives, railcars and other rolling stock

Represents	wheel arrangement (Q672593)
Data type	Item
Domain	According to this template: rolling stock (Q1414135), rolling stock class (Q811704) According to statements in the property: rolling stock (Q1414135), rolling stock class (Q811704) or fictional rolling stock (Q89812562) When possible, data should only be stored as statements
Example	DB Class 240 (Q321738) → Co′Co′ (Q1022125) EAR 27 class (Q18666256) → 2-8-2 (Q1463583)
Tracking: usage	Category:Pages using Wikidata property P2978 (Q43543256)
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/P2978 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 10,011 Main statement 10,003 >99.9% of uses Qualifier 8 <0.1% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Type “rolling stock (Q1414135), rolling stock class (Q811704), fictional rolling stock (Q89812562)”: item must contain property “instance of (P31)” with classes “rolling stock (Q1414135), rolling stock class (Q811704), fictional rolling stock (Q89812562)” 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/P2978#Type Q1414135, Q811704, Q89812562, SPARQL

Tipo valore "wheel arrangement (Q672593)": 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 wheel arrangement (Q672593) (or a subclass thereof). (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/P2978#Value type Q672593, SPARQL

This property is being used by: hu:Sablon:Vasúti jármű infobox ru:Шаблон:Тепловоз cs:Šablona:Infobox - železniční hnací vozidlo Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)