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423 Stars 76 Forks GNU General Public License v2.0 11 Commits 5 Opened issues


Natural Language Engine on WikiData

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A natural language query engine on WikiData.

Examples: ``` Who is Obama? 44th President of the United States How tall is Yao Ming? 2.286m Where was Obama born? Kapiolani Medical Center for Women and Children When was Obama born? August 04, 1961 Who did Obama marry? Michelle Obama Who is Obama's wife? Michelle Obama Who is Barack Obama's wife? Michelle Obama Who was Malcolm Little known as? Malcolm X What is the birthday of Obama? August 04, 1961 What religion is Obama? Christianity Who did Obama marry? Michelle Obama

How many countries are there? 196 Which countries have a population over 1000000000? People's Republic of China, India Which books are written by Douglas Adams? The Hitchhiker's Guide to the Galaxy, ... Who was POTUS in 1945? Harry S. Truman Who was Prime Minister of Canada in 1945? William Lyon Mackenzie King Who was CEO of Apple Inc in 1980? Steve Jobs ```


English query -> Parse Tree -> Matched Context -> Sparql Query -> Answer

Example: Who did Obama marry? -> (SBARQ (WHNP (WP Who)) (SQ (VBD did) (NP (NNP Obama)) (VP (VB marry))) (. ?)) -> {'subject': 'Obama', 'property': 'marry'} -> SELECT ?valLabel WHERE { { wd:Q76 p:P26 ?prop . ?prop ps:P26 ?val . } SERVICE wikibase:label { bd:serviceParam wikibase:language "en"} } -> Michelle Obama


Download Stanford CoreNLP

Make sure you have Java installed for the Stanford CoreNLP to work.

Download Stanford CoreNLP

Run the Stanford CoreNLP server

Run the following command in the folder where you extracted Stanford CoreNLP

java -mx4g -cp "*" edu.stanford.nlp.pipeline.StanfordCoreNLPServer

Install nlquery

git clone
cd nlquery
pip install -r requirements.txt


Start the command line:


To run web app, go to nlquery-app/




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