This is an R wrapper for the Wikidata Query Service (WDQS) which provides a way for tools to query Wikidata via SPARQL.
Wikidata Query Service is maintained by Wikimedia Foundation.
Building a SPARQL query: Museums on Instagram
SPARQL Query Examples for WDQS
Using SPARQL to access Linked Open Data by Matthew Lincoln
Interesting or illustrative SPARQL queries for Wikidata
Wikidata 2016 SPARQL Workshop
Wikidata SPARQL Query video tutorial by Navino Evans
Learning SPARQL by Bob DuCharme