GeoChangesQA

GeoChangesQA is a novel spatiotemporal QA dataset for historical geospatial knowledge based on the HCB-KG.

To create GeoChangesQA, we developed a semi-automated procedure for generating questions, GeoSPARQL queries, and corresponding answers over HCB-KG by leveraging subgraph and query template extraction techniques. Through this method, we automatically generated 5,700 question-query-answer triples.

Example Question

• Natural language question: List the counties founded after 1923-03-04.
• SPARQL query:
  
  SELECT DISTINCT ?x0 {
     ?x0 a hcb-o:County .
     ?x0 time:hasBeginning ?x1 .
     FILTER(?x1 > "1923-03-04"^^xsd:date) .
  }
• Sample Answer: [{'?x0': 'https://hcbkg.l3s.uni-hannover.de/resource/County/aks_aleutianislands'}]