Property talk:P5439

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research measurement
a measurement of an experimentally observed variable

Data type	Item
Domain	experiment (Q101965)
Example	Broadbalk long-term experiment (Q41331872) → crop yield (Q889514)
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) Database reports/Constraint violations/P5439 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2 Main statement 1 50% of uses Qualifier 1 50% of uses
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Type “experiment (Q101965)”: item must contain property “instance of (P31)” with classes “experiment (Q101965)” 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/P5439#Type Q101965, SPARQL