Steps to replicate the issue (include links if applicable):

• Execute the following query in Wikidata Query Service. The query obtains all those items that were born in a place that is located in People's Republic of China (query here)

SELECT ?item {
  ?item wdt:P19/wdt:P131* wd:Q148. 
}

What happens?:

The following error is shown (see image below)

Server error: JSON.parse: unterminated string at line 82924 column 55 of the JSON data

{
  "head" : {
    "vars" : [ "item" ]
  },
  "results" : {
    "bindings" : [ {
      "item" : {
        "type" : "uri",
        "value" : "http://www.wikidata.org/entity/Q7265"
      }
    }, {
      "item" : {
        "type" : "uri",
        "value" : "http://www.wikidata.org/entity/Q7511"
      }
(more lines)
    }, {
      "item" : {
        "type" : "uri",
        "value" : "http://www.wikidata.org/entity/Q151

What should have happened instead?:

• The table of Wikidata items should be shown. This error doesn't happen with other countries. I executed the same query with Uruguay instead of China and the query was succesfully executed (see image below)

SELECT ?item {
  ?item wdt:P19/wdt:P131* wd:Q77. 
}

Software version:

• Wikidata Query Service (as of the time of this writing)

Other information:

• Browser: Mozilla Firefox 103.0.1