%https://github.com/cbdavis/MatlabSPARQL/blob/master/sparql.m

endpointUrl = 'http://sparql.example/endpoint';
sparqlQuery = '# cats\nSELECT ?cat ?catLabel WHERE {\n  ?cat wdt:P31 wd:Q146.\n  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }\n}\n';

url_head = strcat(endpointUrl,'?query=');
url_query = urlencode(sparqlQuery);
format = 'text/tab-separated-values';
url_tail = strcat('&format=', format);
user_agent = 'WDQS-example MATLAB'; %TODO adjust this; see https://w.wiki/CX6

url = strcat(url_head, url_query, url_tail);

% get the data from the endpoint
query_results = urlread(url,'UserAgent',user_agent);

% write the data to a file so that tdfread can parse it
fid = fopen('query_results.txt','w');
if fid>=0
    fprintf(fid, '%s\n', query_results)
    fclose(fid)
end

% this reads the tsv file into a struct
sparql_data = tdfread('query_results.txt')