Property talk:P7942

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National Historic Lookout Register ID
identifier for a fire lookout on the National Historic Lookout Register

Description	identifier for a fire lookout on the National Historic Lookout Register
Represents	National Historic Lookout Register (Q22023366)
Data type	External identifier
Domain	fire lookout tower (Q748998) or fire lookout station (Q107393743)
Example	Hickory Ridge Fire Tower (Q5751273) → us/in/hickory-ridge-lookout-tower Rock Rift Fire Observation Tower (Q65091555) → us/ny/rock-rift-fire-tower Windy Joe Lookout (Q86120559) → ca/bc/windy-joe-lookout
Source	http://nhlr.org/lookouts/
Formatter URL	http://nhlr.org/lookouts/$1/
Related to country	United States of America (Q30) (See 762 others)
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 Items with no other external identifier 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 Mix'n'match (Report) Database reports/Constraint violations/P7942 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 1,427 Main statement 1,422 out of 1,416 (100% complete) 99.6% of uses Qualifier 3 0.2% of uses Reference 2 0.1% of uses
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Distinct values: this property likely contains a value that is different from all other items. (Help)

List of violations of this constraint: Database reports/Constraint violations/P7942#Unique value, hourly updated report, SPARQL (every item), SPARQL (by value)

Single value: this property generally contains a single value. (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/P7942#Single value, SPARQL

Type “fire lookout tower (Q748998), fire lookout station (Q107393743)”: item must contain property “instance of (P31)” with classes “fire lookout tower (Q748998), fire lookout station (Q107393743)” 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/P7942#Type Q748998, Q107393743, SPARQL

Item “country (P17): Australia (Q408), Brazil (Q155), Canada (Q16), Norway (Q20), Sweden (Q34), United States of America (Q30)”: Items with this property should also have “country (P17): Australia (Q408), Brazil (Q155), Canada (Q16), Norway (Q20), Sweden (Q34), United States of America (Q30)”. (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/P7942#Item P17, search

Item “elevation above sea level (P2044)”: Items with this property should also have “elevation above sea level (P2044)”. (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/P7942#Item P2044, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (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/P7942#Entity types

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (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/P7942#Scope, SPARQL