使用SPARQL查询DBpedia-Live与DBpedia给出的答案不同 [英] Querying DBpedia-Live with SPARQL does not give same answer as DBpedia

问题描述

我想使用 DBpedia Live端点来查询DBpedia。

I want to query DBpedia with DBpedia Live endpoint.

我有此查询：

SELECT *
WHERE {
?x a dbo:Person .
?x rdfs:label "Usain Bolt"@en .
}

此查询给出了我尝试过的大多数名称的正确答案（例如泰迪·里纳 @en ），但是在Usain Bolt和Rachid Badouri失败了。

This query gives the correct answer with most names I tried (for example "Teddy Riner"@en) but it fails with Usain Bolt and Rachid Badouri.

我不知道为什么他们的DBpedia页面（ Teddy Riner ， Usain Bolt ）的构造方式相同：它们都具有 rdfs：label ，其编写方式与我的写法完全相同

I don’t get why as their DBpedia pages (Teddy Riner, Usain Bolt) are constructed the same way: they both have a rdfs:label, which is written exactly like I did.

在我看来，端点与DBpedia之间存在不一致的地方，但是我不认为这是因为端点尚未实现。

It seems to me that there is an incoherence between the endpoint and DBpedia. But I don’t think that it's because the endpoint is not to date.

更令人惊讶的是，此查询给出了正确的答案：

Even more surprising, this query gives the correct answer:

SELECT *
WHERE {
?x rdfs:label "Usain Bolt"@en .
}

但Usain Bolt是 a dbo：Person ！对于Rachid Badouri也是如此。

However, Usain Bolt is a dbo:Person! Same thing for Rachid Badouri.

有人可以解释一下为什么第一个查询没有给出答案吗？

Could someone explain me why the first query does not give answer?

任何帮助将不胜感激！谢谢

Any help would be appreciated! Thanks

推荐答案

根据DBpedia-Live，在撰写本文时，带有 rdfs：label Usain Bolt @en 的实体具有多种类型，但不是的。与带有 rdfs：label Rachid的实体 Badouri @en 。

According to DBpedia-Live, at the time of writing, the entity with rdfs:label "Usain Bolt"@en has many types, but is not a dbo:Person. Similar for the entity with rdfs:label "Rachid Badouri"@en.

相反，带有 rdfs：label Teddy Riner @en 的实体是 a dbo：Person 。

注意： DBpedia-Live内容为移动目标，随Wikipedia内容的变化，模板的调整以及其他变量而变化。当您阅读本文时，我在上面所做的声明可能不再正确。

Note: DBpedia-Live content is a moving target, varying with Wikipedia content changes, adjustments in the templates, and other variables. The statements I made above may no longer be true when you read this.

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