How to specify a unit with Quickstatements in Wikidata

Question

I want to add the type of unit for a property (centimeters) like width [1] using Quickstatements [2].

In the UI it is pretty easy and visible like:

Adding a statement with additional qualifier[3] seems not to work, as I don't know the correct Wikidata property.

• [1] https://www.wikidata.org/wiki/Property:P2049
• [2] https://www.wikidata.org/wiki/Help:QuickStatements
• [3] https://www.wikidata.org/wiki/Help:QuickStatements#Add_statement_with_qualifiers

I tried to use: type of unit for this property [P2876] like:

Q123384875|P2049|93|P2876|Q4407906

but that results into a warning like:

Answer 1

Well:

1. go to https://www.wikidata.org/wiki/Help:QuickStatements
2. Ctrl+F
3. search for "unit"
4. read the first entry for your search ;-)

In your specific case, you can use:

Q123384875|P2049|93U174728

Note that the centimeter (as unit of length) is Q174728, not Q4407906.

The data type that you want to specify is a quantity. Instead, the syntax

Q123384875|P2049|93|P2876|Q4407906

is used for adding a qualifier to the statement (see Help:QuickStatements § Add statement with qualifiers).