This is a revival of a tool by Benestar that used to be hosted at https://tools.wmflabs.org/bene/sparql. That URL is currently down, so the project was copied here to revive the tool.
Check out the live demo at http://waldyrious.github.io/sparql-query-generator/.
The tool is a simple web interface that helps with creating SPARQL queries for Wikidata by filling subject-predicate-object triples. An autocomplete dropdown feature is available to translate human-readable labels into Wikidata codes for items and properties.
The generated query can then be ran in the Wikidata Query Service.