Background:

As a user I want to be able to get only relevant and reliable items when I search for a specific property value pair. By building in best rank, we'd be able to successfully refine the results.

For example, if I search for instance = geographic location, I would not get Earth in the search results.

Implementation possibilities:

• We can make this the default type of search in haswbstatement and also GraphQL if we change it in CirrusSearch but would need coordination and acceptance across our team, Wikidata Omega and the Search team at WMF
• We can add a parameter to GraphQL search where a user can specify if they want only items with best ranked statements meeting this criteria

Notes:
Statements on wikidata entities can have different ranks, they are as follows:

• Preferred: Assigned to the most current statement or statement that best represent consensus
• Normal: Assigned by default to any statement
• Deprecated: Assigned to statements known to be erroneous
• Best: A statement with best rank is a statement with preferred rank and if there is none, then a statement with normal rank.

Also associated:

• Truthy: Similar to best statement but only showing the value (throwing away additional information like qualifiers and references)

More information: https://www.wikidata.org/wiki/Help:Ranking