Hoi,

The head of state is defined on the state involved.. the head of state is ... the prime minister of Japan.

When Mr Abe is the current prime minister, you add "office held" "Prime minister of Japan" on his item and you can embelish it with the start date, the predecessor. For previous prime ministers you do the same but add end date and successor as well as qualifiers.

When I add qualifiers, I will only add them when I know them. For many historical people a date of death is known but not the date of birth. As far as I am concerned that is fine.

When an office holder has two terms in office, he holds that office twice. Consequently you define the held office twice. https://www.wikidata.org/wiki/Q439237 is an example of the same office held five times.

Thanks,

GerardM

On 31 October 2013 11:39, Antoine Zimmermann <antoine.zimmermann@emse.fr> wrote:

Hello,

I have a few questions about how statement qualifiers should be used.

First, my understanding of qualifiers is that they define statements about statements. So, if I have the statement:

Q17(Japan) P6(head of government) Q132345(Shinzō Abe)

with the qualifier:

P39(office held) Q274948(Prime Minister of Japan)

it means that the statement holds an office, right?
It seems to me that this is incorrect and that this qualifier should in fact be a statement about Shinzō Abe. Can you confirm this?

Second, concerning temporal qualifiers: what does it mean that the "start" or "end" is "no value"? I can imagine two interpretations:

1. the statement is true forever (a person is a dead person from the moment of their death till the end of the universe)
2. (for end date) the statement is still true, we cannot predict when it's going to end.

For me, case number 2 should rather be marked as "unknown value" rather than "no value". But again, what does "unknown value" means in comparison to having no indicated value?

Third, what if a statement is temporarily true (say, X held office from T1 to T2) then becomes false and become true again (like X held same office from T3 to T4 with T3 > T2)? The situation exists for Q35171(Grover Cleveland) who has the following statement:

Q35171 P39(position held) Q11696(President of the United States of America)

with qualifiers, and a second occurrence of the same statement with different qualifiers. The wikidata user interface makes it clear that there are two occurrences of the statement with different qualifiers, but how does the wikidata data model allows me to distinguish between these two occurrences?

How do I know that:

P580(start date) "March 4 1885"

only applies to the first occurrence of the statement, while:

P580(start date) "March 4 1893"

only applies to the second occurrence of the statement?
I could have a heuristic that says if two "start date"s are given, then assume that they are the starting points of two disjoint intervales. But can I always guarantee this?

Best,
AZ

--
Antoine Zimmermann
ISCOD / LSTI - Institut Henri Fayol
École Nationale Supérieure des Mines de Saint-Étienne
158 cours Fauriel
42023 Saint-Étienne Cedex 2
France
Tél:+33(0)4 77 42 66 03
Fax:+33(0)4 77 42 66 66
http://zimmer.aprilfoolsreview.com/

_______________________________________________
Wikidata-l mailing list
Wikidata-l@lists.wikimedia.org
https://lists.wikimedia.org/mailman/listinfo/wikidata-l