Help:Lähteet/Kohteet, jotka eivät tarvitse lähdettä

Wikidata on kokoelma lähteistettyä tietoa, joten suurimman osan esityksistä pitäisi ilmaista, mistä data on peräisin.

Joissakin tapauksissa lähteitä ei tyypillisesti tarvita. Nämä ohjeet kertovat, milloin ei tarvitse lisätä esitykselle lähdettä Wikidatassa.

Please note that when data about an item is disputed, then a source needs to be added regardless of whether it is included below. Furthermore, sources should not be removed from items that already have sources.

Kun tieto on yleistietoa

Tietyt ominaisuudet eivät yleensä vaadi lähdettä:

1. useita instance of (P31) -arvoja
   • kun nämä eivät ole itsestään selviä kohdetta tarkastelevalle henkilölle
   • Esimerkki: esitys "Elvis Presley (Q303) on instance of (P31) human (Q5)" ei tarvitse lähdettä
2. occupation (P106)
   • ellei se ole yleisesti tunnettu; useimmat henkilöt eivät ole kuitenkaan riittävän merkittäviä Wikidataan ammattinsa takia
   • Esimerkki: esitys, missä "Elvis Presley (Q303)n occupation (P106) oli singer (Q177220)" ei tarvitse lähdettä
3. subclass of (P279)
   • similar to instance of (P31) — but used when every instance of a class is also an instance of another class
   • Example: the statement "a trilogy (Q149010) is a subclass of (P279) a series of creative works (Q7725310)" (every trilogy is a series in English) does not need a source

When the item has a statement that refers to an external source

Where the external source of information allows easy verification of the statement:

1. Wikidata:List of properties/Generic#Authority control
   • values for authority control properties do not need a source because the values are linked to and/or automatically imported from the authoritative catalog, system, or database
   • Example: a statement about Harry Potter and the Philosopher's Stone (Q43361)'s GND ID (P227) (an authority file maintained by the German National Library) or its OCLC control number (P243) does not need a source
2. Commons category (P373)
   • a statement about the item's Wikimedia Commons category (the category containing files related to the item) does not need a source
3. topic's main category (P910) and category's main topic (P301)
   • for items that are Wikimedia category pages
   • Example: a statement that the category's main topic (P301) is Germany (Q183) for Category:Germany (Q1410828) does not need a source

Note: If a particular authority control source of information has not yet been added to Wikidata as a property, you can propose it at Wikidata:Property proposal/Authority control.

When the item itself is a source for a statement

1. a book for its author and other information on the cover
   • for information inside the book (e.g. plot details) use chapter (P792) in the source
   • Example: a statement about The Hunger Games (Q11679) having Suzanne Collins (Q228624) as the author (P50) does not then need to include The Hunger Games (Q11679) as a source
2. a movie for its actors and other information in the credits
3. a DVD or LP record for information on the cover, including the playlist
   • for information in liner notes use stated in (P248) with liner notes (Q2263757) as the source
4. coordinates for anything you can visit or easily identify on a map, including a lunar or Martian map.

See also

• Help:Sources