What3words is a proprietary geocode system designed to identify any location with a resolution of about 3 metres (9.8 ft). It is owned by What3words Limited, based in London, England.
| Type | datatype | |
| Wikidata property | P1566 | |
| Regular expression | [1-9][0-9]{0,8}| | |
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| Classification | Classification | identifier |
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