Property talk:P15

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reference URL
should be used for Internet URLs as references

Data type	URL
Allowed values	(f|ht)tps?://.+^((?!gratispaideia\.org).)*$^((?!gratisdata\.org).)*$^((?!miraheze\.org).)*$^((?!petscan\.wmflabs\.org).)*$
See also	official website (P19), stated in (P75), archive URL (P191), archive URL (P191)
Lists	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)> Map Random list
Proposal discussion	Originally created without a formal discussion
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[create Create a translatable help page (preferably in English) for this property to be included here]

Format “^((?!gratispaideia\.org).)*$”: value must be formatted using this pattern (PCRE syntax). Exceptions are possible as rare values may exist. List of this constraint violations: Database reports/Constraint violations/P15#Format, SPARQL

Format “^((?!gratisdata\.org).)*$”: value must be formatted using this pattern (PCRE syntax). Exceptions are possible as rare values may exist. Known exceptions: Wikibase item datatype (Q799) List of this constraint violations: Database reports/Constraint violations/P15#Format, SPARQL

Format “^((?!miraheze\.org).)*$”: value must be formatted using this pattern (PCRE syntax). Exceptions are possible as rare values may exist. List of this constraint violations: Database reports/Constraint violations/P15#Format, SPARQL

Format “^((?!petscan\.wmflabs\.org).)*$”: value must be formatted using this pattern (PCRE syntax). Exceptions are possible as rare values may exist. List of this constraint violations: Database reports/Constraint violations/P15#Format, SPARQL