相同的SPARQL查询会产生不同的结果

Question

有问题的查询是

PREFIX dbo: <http://dbpedia.org/ontology/>
select distinct ?label ?abstract where 
{ 
?concept rdfs:label ?label . 
?concept dbo:abstract ?abstract .
?abstract bif:contains '"self driving cars"' 
filter(langMatches(lang(?label),"en")) 
}

在dbpedia公共端点上运行此命令时，我收到：http://dbpedia.org/sparql?default-graph-uri=http%3A%2F%2Fdbpedia.org&query=PREFIX+dbo%3A+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2F%3E%0D%0Aselect+distinct+%3Flabel+%3Fabstract+where+%0D%0A%7B+%0D%0A%3Fconcept+rdfs%3Alabel+%3Flabel+.+%0D%0A%3Fconcept+dbo%3Aabstract+%3Fabstract+.%0D%0A%3Fabstract+bif%3Acontains+%27%22self+driving+cars%22%27+%0D%0Afilter%28langMatches%28lang%28%3Flabel%29%2C%22en%22%29%29+%0D%0A%7D&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000&debug=on

这就是我要找的东西。但是，在我的服务器上运行相同的操作会给我：http://34.195.108.80:8891/sparql?default-graph-uri=&query=PREFIX+dbo%3A+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2F%3E%0D%0Aselect+distinct+%3Flabel+%3Fabstract+where+%0D%0A%7B+%0D%0A%3Fconcept+rdfs%3Alabel+%3Flabel+.+%0D%0A%3Fconcept+dbo%3Aabstract+%3Fabstract+.%0D%0A%3Fabstract+bif%3Acontains+%27%22self+driving+cars%22%27+%0D%0Afilter%28langMatches%28lang%28%3Flabel%29%2C%22en%22%29%29+%0D%0A%7D&format=text%2Fhtml&timeout=0

请指出我如何获得与我的终端上的公共端点类似的结果。